Hi and welcome to the forum,
If you are using Cubase Pro or Artist (with the USB-eLicenser), just plug it in and you are ready to go.
If you are using Cubase Elements, you have to update to the current non-eLicenset version (currently we have Cubase 15).
If you are using Cubase LE or AI you are allowed to update to Cubase 15 for free, here.