To become a physical therapist you need to get into college and take a physical therapy course and to be able to qualify to get into college and take the physical therapy course you need a GPA of at least 3.52 but it can vary from place to place.
As long as your GPA is at least 3.52 you have a good chance of getting into physical therapy school.
In total you'll spend at least 7 years in college completing the courses to become a physical therapist but it's well worth the time spent because physical therapists will always be in demand and are paid pretty good.