When I tried to shared my screen on OBS studio it didn't do anything. How do I fix it?
Switch to Xorg if you are using Wayland.
I am using Xorg.
X11 not Xorg.
installed it on Software.
The Software Store is made by Gnome. So is Flatpak.
So... They made the Software Store default to Flatpak.
And... As usual... The Flatpak of OBS cannot communicate with the system in order to gain access to the screen. A user can try overriding it:
flatpak override com.obsproject.Studio --user --socket=x11 --filesystem=home
It really begs the question as to why Flatpak's are being pushed despite... Several years now of consistent lack of access problems on them. Feels like being on Microsoft.
The other option is to remove the Flatpak and select the Zorin Install option (the apt repository instead of FlatHub).
sudo apt install obs-studio
Thanks but still doing the same thing.
But now I have 2 VLC Media Player 
Which actual steps did you take?
If you are given a series of different potential solutions and you reply only with "it didn't work", we have no idea where to begin troubleshooting that.
What sources also are you trying to use with OBS? If you were to record something, would you still be able to see your cursor and just the "background" where your desktop should be is black? Or are you trying to record a specific window?
I would note that OBS' flatpak is something of a unique case. OBS Studio puts actual work into making their flatpak work well, to the point that they were ready to take Fedora to court over providing their own Flatpak without informing users that they'd modified it. It was causing OBS a lot of extra hassle in support, and came very close to a lawsuit before Fedora backed down.
In my personal experience, the OBS flatpak works better than the .deb on Zorin 17 at least, due to providing dependencies that worked better with the application. The flatpak recorded smoothly, while the .deb had fairly awful hitching. It also comes preconfigured with the x11 socket permission and filesystem host permission.
specific window.
Yep I knew it.
Anyways I uninstalled it.
That attitude is a great way to convince people it's not worth trying to help you. @Aravisian is pretty easily our most experienced member and has provided immeasurable amounts of useful help to lots of people here. Leading with his distaste for flatpaks before confirming that his advice fixed the issue was probably a mistake, but that doesn't mean that OBS doesn't need those permissions or that similar problems haven't been solved by them--especially when you were so very vague in your request for help. Providing as much information as possible up front lets people try to give meaningful help instead of going with the default "these things fix problems in general" advice.
My guess would be because developers get tired of users complaining about bugs they fixed 3.5 years ago. We've had the discussion about package maintenance in the past, and I take your points, but the OBS in repos is from March 2022. The Flatpak is from 6 days ago. If I were developing software, I'd sooner have repositories not include it than deal with complaints about things I fixed years ago.
Pick your "years old" problem, I guess. I agree with you absolutely that the flatpak issues are obnoxious and any flatpak that's not configured with the necessary permissions as installed is bad work--but since developers CAN configure that, I feel like that's at least as much on them as it is the flatpak format. No one complains about APKs requesting permissions, but they actually DO request them, so maybe that's the real solution. At install or first run, ask the user to allow X, Y, and Z, and if they don't and it won't work, well, that's on them.
Belatedly, now that I've discovered it: There's a PPA that can be added to get the latest stable version of OBS as a .deb.
sudo add-apt-repository ppa:obsproject/obs-studio
sudo apt update
sudo apt install obs-studio
This will avoid the Flatpak issues to any extent they exist and get the current version of OBS. Results not guaranteed, I'm currently troubleshooting a few things unrelated.
I'm not being rude, i just said it didnt works out, at first i was thinking maybe not go with it.
The main reason I asked if you were trying desktop or a specific window is that if you were trying a specific window, it could have maybe been the application you were trying to share that may have been the issue. I've run into that a few times here and there, although its not all too common from my history with running the flatpak of OBS.
I used to stream quite regularly, but I haven't been online in a while due to a lot of life changes, but I can't imagine much has changed. Would you be able to say the steps exactly that you were trying to do? I could try later to replicate the issue if it crops up.