When working on a project, choose something that interests you. Since science is everywhere, you could do a project on virtually anything. Focus on your hobbies or things that excite you. Only nerds or brainy students can do science fair projects . All sorts of people do science projects.
Science is all about asking questions and finding answers.
Actually, all people of your age group are good scientists. You're curious about the world, like to ask questions and that's what scientists do. Your hypothesis has to be correct in order to have a good project. Some of the best projects do not have a correct hypothesis. Conducting an experiment is all about finding answers.