i don't know u r trying to use scrcpy by using usb cable or u r trying wireless connection?
I think there is no problem when using usb cable that support transfer data, u just need to enable debug mode in ur phone.
if the problem in using scrcpy in wireless mode, u need to pair ur pc with ur phone using the command adb pair.
adb pair command not supported in the version used by zorin and scrcpy.
so the steps will be:
1- install the last adb version that support pair command
2-go to ur phone and enable wirless dubg
3-open terminal in the folder that has adb that u downloaded, and type that in terminal:
./adb pair ip address phone
4-go to ur phone and in wirless dubg u will see ur pc is paring with ur phone, get the port from the info in that filed and use it in the following commands
./adb connect 192.168.1.5:port(note: ur will use ip of ur phone and the port that u will find it in wireless debug field)
./adb tcpip port
adb connect 192.168.1.5:port(note:u will use the old version here)
scrcpy