You can earn badges as a reward for completing Courses on YouTube. When you finish all the lessons in a Course, you’ll get a notification letting you know you have a new badge. You can select the notification to see all the badges you’ve earned so far.
Notes: Badges are available in all countries and regions where Courses are currently offered. The badges you earn are private, so only you can see them.
View & manage your badges
You can also find your badges by going to the Badges section of the You tab.
- Tap You in the bottom-right corner of the YouTube app.
- Tap Badges.
You can select More beside a badge to delete it, share it, or learn more about it.
If you don’t want to get badges anymore, you can select More 
at the top-right corner of the page, then Opt out. You can select Opt in at any time if you want to get badges again.