Hi,
You can always use the Windows uninstaller. If you want to uninstall just Cubase, choose just this option from the Windows uninstaller. If you want to uninstall even some library, select the library you want to uninstall.
When you uninstall Cubase, the preferences folder remains in the system. This guarantee, you will get the same Cubase setup after you install it back. If you want to get the Factory Settings, delete the preferences folder (%AppData% Steinberg/Cubase 9.5).