Hi there and welcome to the forum!
First click on Menu and Settings
If you’ve successfully completed the certification projects, they should all have a View button next to them and the large button at the bottom should be Claim Certification.
This should award you your certificate.
NOTE: If you haven’t done so already, you may need to first set My profile to public in the Privacy Settings further up the page and also accept the Academic Honesty Policy.
Thank you so very much.