>>938134101 (OP)
Just start a conversation with her. Talk about something you have in common, classes, hobby you saw her do, anything you know she will answer with more than 2 words. After that, just casually continue the conversation. Repeat that a few more times and then ask for her number/IG. Continue to speak to her there and IRL. Invite her for a drink. Escalate slowly from there. Good luck, the first step is by far the hardest.
>>938134218
If you don't know then maybe, and you definitely can't lead with that. If she has on any band shirt or you see a book or anything else, just mention it. Ask her about it. Then ask for coffee. That's really all there is.