Don't bother getting a degree unless a. It's in a subject you are generally interested in and b. it is in a subject, and from an institution, with some academic merit. By this I mean a rigorous academic subject from (in the U.K.) a Russell Group institution. "Aviation" degrees from dubious institutions will carry little weight with employers of all kinds. "Aviation" is not an academic subject so how can you do a degree in it?! (Contrast with aeronautical engineering, or similar).
As others have suggested if you're sure you want to be a pilot, get on with it straight away. Flying training is expensive enough without first incurring student debt!