"Despite travel restrictions due to the coronavirus pandemic, France has done everything to let you join your institution safely, whatever your country of origin. Whether you are a student in long-term or short-term studies, a student in an internship or a researcher, you are welcome to France. For more information, please check with the French consulate or your Campus France office."
The following document "How to come to France?", elaborated by Campus France and updated on January 28th, 2021, will help you determine which category your home country falls into and which measures apply to your specific situation.