How To Get Rid Of Scars?

I don't remember whether it was a bug bite or a allergic reaction, but I remember I ate some chips that I think were old, but then I stopped eating them and the itching went away, but not the bumps. They look like little mosquito bites and were really itchy so I scratched them. They were red and noticeable but now they went down and look like scars. Its really ugly. Some even have scabs on the top. Does anyone know any way to remove them? I'm 12 so I can't get surgery.
Thanks!