Are you trying to install Windows directly on the drive, as a bootcamp install, or as a virtual machine where the files live on the drive?
The first one requires raw disk mode, which is a PITA to setup and unless you have very specific needs, I'd avoid it at all costs and do one of the other options.
The best and easiest way is to format that drive as APFS, then create a normal virtual machine with the files hosted on it.
