OK, I have a fresh install of zorin on an ancient Asus laptop for my friend. its exclusive for retro gaming. It has the nvidia 860m gpu. The install worked fine but in the about section it still seems to be showing the intel mesa graphics? Things I have tried, reinstalling os and removing the packages and trying a different version, using the sudo prime selection command, and (tried 4 or 5 drivers so far) also tried blocking the nuveau driver. also nvidia-smi seems to show the correct information using the 550driver but shows (off) next to name and utilization is only 3mib. I read several write ups and maybe i need an older driver yet none have yielded thus far for me. The mega bios secureboot option disabled. I suspect that the graphics are installed but not being utilized. I gave up after 6hours, and went back to a fresh install. glxgears shows 60fps but i dont think its using the gpu either.
You need to downgrade your kernel to 5.15 and install the nvidia 390 driver.
Your card is legacy
Please open a terminal and enter:
sudo lshw -C video
and post back the results please.
Also read this topic
thanks for the quick reply gang, still at the office =(. I ran the sudo lshw -C and both hardware descriptors are present nvidia and then intel following afterwards. Im on another laptop however so cant paste atm. I will attempt to dg kernal after work 
Zorin defaults to Wayland Compositor, so you might also try logging in to Zorin on xorg instead. When login screen appears, enter/select your user name and a cog appears lower right. Click on this and select Zorin on xorg, then enter password and log in.
Ya for some reason I found some defaulting behavior, (even after explicit selection of X11). Everything was working late last night, however this morning rebooting the desktop env is gone cant startx or anything =/ . So now I will try to dg kernel as per Michel. I want to make sure I get it all figured out in the end I will make it boot straight into retroarch hopefully as my bro is not tech savy.