I graduated two years ago now but I can see the benefits of a bujo for university as clear as if I was still there. For maybe the first time you're somewhere where you're 100% responsible for yourself and for your organisation and having a bullet journal would definitely have been beneficial for me. Ohhhh if only they'd been a massive trend back then. I'm sure they were a thing but maybe not as popular as they are now but lord I wish I'd had one.
I'd definitely have run through several journals whilst I was there with everything I'd fill it with. Here's my suggestions for what to include in your bujo for uni;