Raine, nothing on your profile, so we don't know if you are a ten year old child, or a fifty year old idiot. So I will say what I have said many times. You may believe whatever you wish, but a belief does not make it true. Now, get it into your head. There is nothing that you can take by mouth,by injection,by any method whatsoever, that will improve your intelligence. Do you understand that? Nothing!
However, the standard of your intelligence can improve by study, by acquired knowledge, and experience. There is no spell that can do that!