Thank you for contacting Adobe Captivate Prime Team.
Once the course is up, the user can attempt the course and complete it.
Then you can switch your role to Administrator. Navigate to the Course> L2 Quiz Score.
There you can download the Quiz Score using the option "Export Quiz Score" and check what the users have answered.
Kindly let me know if any further assistance is required.
Hope to hear from you soon.
Will give it a trial and update you.