It should be digitally licensed. So installing a fresh copy will automatically activate.
That being said, you should also be able to search for “Reset this PC” in your start menu and choose “Remove everything”. That will effectively give you a fresh install without creating installation media.
Raspberry Pi - Introducing: Raspberry Pi 5 (www.raspberrypi.com)
The Release Date and Key Features of Windows 12 Unveiled (ux-news.com)
I…didn’t think windows 12 was actually a thing but here we are?