If you're unable to screen share for a zoom (see screenshot below), it's likely due to a security setting.
To correct the issue...
Go to System Preferences (Apple Icon > System Preference)
Navigate to the Security & Privacy option
Privacy tab and locate Screen Recording on the left
- Click the padlock at the bottom to enable changes and enter the password that allows you to access your Mac
- Find and select Screen Recording
- Check the box next to Zoom
You may need to restart your Zoom app, then try again
