By way of some background I have installed a lot of Linux distros to try them and see which ones will work best with my hardware. Even so I am not experienced with Linux and seldom use the command line.
This is the first distro where I have NO idea how to set the screen save or where to find it. I have Q4OS running on another laptop and found and set up the screensaver easily. So what gives with Zorin?
Zorin 15 Core and Zorin 15 Ultimate use the Gnome Desktop Environment.
Zorin 15 Lite and Zorin 15 Ultimate Lite use the XFCE4 desktop environment. I use Zorin Lite;
You can configure the screensaver in Zorin Lite by opening the app menu and then moving to Power Manager or run in terminal:
xfce4-screensaver-preferences
Which will open a GUI screensaver configuration window.