Open Settings → Deletetab. You'll be asked to type the course title to confirm.
Heads up:Deleting a course is permanent. It removes all modules, lessons, videos, files, and quiz data. Enrolled students lose access immediately. This action cannot be undone.
What happens to active students
If the course is paywalled and students have purchased access, you should issue refunds before deleting. Deleting a course does not automatically refund anyone.
Alternative: unpublish instead
If you just want to hide the course temporarily, switch off the Publish Course toggle in the Access tab. The course stays in your account and you can republish anytime.