Your question is poor! Brian May is a fantastic Rock Star AND a studied Dr. of Astro Physic!
You misunderstand as well. In Britain, and I'm sure in every country as well, universities give out all sorts of honorary things, usually PhDs (Brian's had a few) but also fellowships and all sorts of other types of honorific. They are purely for being famous/achievement/charitable works etc.
This honorary fellowship has nothing to do with his academic studies and there is no money involved. The clue being in the link I posted up above ie. honorary. It even says what its for in the link...
'Puritanism - the haunting fear that someone, somewhere, maybe happy.'