X11vnc.service not found error

I installed x11vnc on a 'try it' (versus 'install') version of Zorin 17.1 core. Then I ran 'sudo systemctl enable x11vnc.service'. Received the following error:

Failed to enable unit: Unit file x11vnc.service does not exist

Any ideas?

Gday @erick00 , Welcome to the community!

Have a look here may have some hints