The FCC now requires all license application use a FRN number.
To register and receive a FRN number, click on link below. Then click on Register.
https://apps.fcc.gov/coresWeb/publicHome.do
fill out the form and the Volunteer Exam Coordinator will contact you.
There is online options for testing and here is a site to help find a test.
https://hamstudy.org/sessions