Heart Month Challenge
I have exercised over 127 minutes and still have not been awarded this badge. What is the problem?
Apple Watch Series 3, watchOS 6
Be patient. It may take up to 9 days after completing the activity to earn the award. For more info, see the "Get help" section in:
Earn Activity awards using your Apple Watch - Apple Support
If you can't wait, sometimes restarting your watch & iPhone will speed-up the process.
How to restart your Apple Watch - Apple Support
Restart your iPhone - Apple Support