I'm not too sure on the details so I could be wrong, but my understanding of the residency requirements is that you need to be either a UK national or settled immigrant and have been living anywhere in the UK for a few years. You'll also need to be living in Scotland specifically when the course starts.
If you're moving to Scotland just to study you'll have to pay out of pocket, but if you're in Scotland long-term you're probably fine. I'd recommend speaking to an advisor to be sure.