Hello

The United States Medical Licensing Examination (USMLE) is a screening test for medical graduates. Candidates who wish to practice medicine in the USA have to appear for this test. You will have to apply through Educational Commission for Foreign Medical Graduates (ECFMG).
You can go through the link below and check the detailed procedure and eligibility crietria to apply

https://studyabroad.careers360.com/articles/usmle

Good Luck!