Build a Dr Who TARDIS. One that really works, not a model.
Physics is a broad subject, and there are a lot of things that could be built, or done, and called a "physics project". If there is a particular branch of physics you are interested in (e.g. mechanics, electricity and magnetism, thermodynamics, or modern physics), mentioning this might help the answerer here to suggest a project for you. I like rolling balls down ramps. So that's what I am going to suggest. This is an idea I have posted to this forum before, here:https://www.instructables.com/answers/Epic-Science-Fair-Ideas/
Your question is incorrectly-formatted. It is recommended that you install the latest grammar-drivers L
No countryNo ageNo cluesYour school/college are by far the best advisors you will find.A big part of education is to learn to ASK QUESTIONS if you don't know - A major part of that is knowing who and where to ask to get the best result.