If you are going for your PE license, one of the first questions you need to figure out is the order of events.
If you are seeking your PE license in the state of New York, you must submit your application and wait for approval before registering for the PE Exam.
If you are applying in New Jersey, you can now (as of Spring 2021) register for and pass the PE Exam first, then put your application together later.
To help you figure out if your state is more like New York or New Jersey, check this map!
Each state has it’s own process and it’s a good idea to read about your state board’s requirements directly from the NCEES Website.