The number users assigned to each QC will appear in the column “QuickCheck Enrollments” directly right of Course Enrollments column. 
 

Please note: this column will appear for all columns regardless of whether the course has QuickCheck taxonomies added. 

To review the status of a specific user (or to confirm that the course has QuickCheck taxonomies added), you must navigate to each program and switch it to show users in QuickCheck. The course show page allows you to view all users who are currently enrolled in the selected content or QC.