A Udemy clone script manages course enrollment and student access by using a set of integrated features. When a student enrolls in a course, the script updates the database to grant the student access to that specific course's content. It handles authentication and user management to ensure only enrolled students can view the course materials. The system also tracks progress, provides access to quizzes and assignments, and sends notifications or reminders as needed. This setup ensures a smooth and organized learning experience for both students and instructors.