You license has to be a PPL, CPL or ATPL at an ICAO level.
During this process, you will send a copy of your data and license to the FAA. Then the FAA will contact the authority of your country of issuance
to verify the authenticity of your license. Last step, they will send you a verification letter.
Once you receive the verification letter, you will need to get an appointment at a FSDO (or if available, with a designated FAA
representative outside US) in order to have you FAA Certificate issued.
You will need to know you height in inches and your weight in pounds.
If you are not familiar with these units, this converter from cm/kg will help you: