If you enable the rating setting in the Course Catalog asset, users can give feedback on the courses they have taken and other users can see the rating of different courses. To enable the course rating:

In the Full Admin, click Content Editing, Content Explorer. 

On the slide containing the Course Catalog, right-click the Course Catalog and click Go to slide editor.  

Right-click the Course Catalog asset and choose Edit this asset.

Note: On the page that appears, click Save for selected slides or Save for all slides. Click OK. 

Click the Course popup + enrollment warnings tab, and then select Show and enable rating in viewer and Show and enable liking in viewer. 

Click Save.

In addition to rating, users can also sort the order of courses by name, date, price, rating, and likes. This makes it easier for users to search for specific courses. To enable the course sorting: 

In the Course Catalog asset settings, on the Main tab, in the Overview list filter settings section select Show sort by. 

Click Save.