If you have one gcse which is bad will universities know?Watch
Don't make you decision completely on what I say though. talk to school, family etc first.
The choice is up to you. If I had completely no idea what the hell was going on and I didn't even enjoy the subject, I would drop it if I were you. As the person above said, you can spend more time on the other subjects to get solid A*s. However, I HATED History when I started my GCSEs (it was in fact international GCSE of Cambridge but whatever, it's similar) and got Ds and things, but now I constantly get A's and am loving the subject.
You should talk to the teachers and parents. When I made a decision on A-levels recently, teachers were a big factor in the decision, especially because my parents have no idea about anything with British education. You might end up like my case in History. You could see a huge jump in grades but you might not. I don't know anything else about you, so can't tell you what to do but this is my 2 cents
basically i have been predicted good grades like A*,A and B but then i have one E grade in business studies and economics which is joined together and my school is giving me the choice to drop the E grade subject so should i drop it or keep doing it and get the bad grade and will the grade show up on any records for like unis and stuff. By the way i'm taking 9 GCSE's if i drop the subject.