Sorry to close this but please read previous threads, this has been asked many times before and your question is unspecific as you do not any details on your skillset and what you're interested in. Please see especially my comment in that linked thread which I think is critical:

(...) the most important thing: Get a supervisor and let them decide a suitable project. If you are inexperienced never choose a project yourself as you cannot estimate adequately if it fits your skill level and you can manage to produce adequate results in the time you have available.

The linked thread contains links to other questions as well. Please also use the search function.