I’m assuming you’re not using a USB eLicenser so therefore you’ll need to reactivate the software on your new PC via your MySteinberg account (pretty straightforward from the account window, but come back if you get stuck).
You’ll also probably want to copy across your preferences files, see below for location:
Songs will also (presumably) need to be copied across. They don’t have to be copied to exactly the same location as on your old PC but you’ll get fewer dialog boxes to click if they are.
It’s a relatively straight forward operation but do come back if you get stuck.