You might get various types of software, perhaps a dictaphone/note taker (unsure), specialist MH mentor, individual exam arrangements, etc. Honestly, there's a lot of help out there, your assessor will help you figure out what you might need to support you through your time at university.
It might be worth writing down things that affect your ability to study. So for me because of being dissociated a lot I forget what is going on a lot, so a dictaphone (and full access to all recorded lectures) was a good choice. It meant that even if I did dissociate in a lecture or whatever, I had that as a back up to refer back to. I also have crappy concentration, so reading is a pain - I have (and still use despite graduating in 2016!) text-to-speech software on large chunks of text. I have major issues with motivation and a specialist mental health mentor was so helpful in helping me stay on track and manage my time effectively, especially around deadlines.
Basically, think about all the issues your BPD/EUPD causes you when trying to study and write them down. Your assessor will think of ways to mitigate those issues with you. Good luck!