What happens if you do bad in ACP tests??

So I do economics at A level and we have these exams we do. Apparently we do them 5 times a year or something idk (may be a term can’t remember lol) and I was wondering what happens if you let’s say get 50% or something.

Because I really don’t want to do bad or get kicked off the course. I’m doing ACP1 next Thursday. Of course I am going to study more. But I just want to know what would happen.

Thanks