Sarcastic answer: A bunch of academics looking to come up with an excuse to not have to go out into the real world created another bullshit program that would let them write more dissertations no one would read. Shit like “Curating Cities as Text: Contesting Art using Literary Narrative, Visual Practices and Narrative” and “Museum Displays and the Five Senses” (I didn’t make that last one up, believe it or not). So if you have about $20,000 to $30,000 to spare, you will receive a degree, hardly worth the paper it’s written on, providing it’s cheap, useless paper.
Serious answer: Museology is the science of collecting, arranging and managing objects for museums as well as the cultural study of their establishment and development within society. There are definitely some “great” graduate programs out there, probably the most famous one is at the University of Leicester. Unfortunately, I chose the wrong one in another part of England. But if luck is on your side and you know the right people, you can work in any department of a museum, archives/collections, museum history, education programs…