mod/certificate/view
From MoodleDocs
Viewing a Certificate
To generate a Certificate or review a Certificate that has already been issued to you, click on the name of the Certificate on the course page and then on the Get your certificate or Review your certificate button. You will be prompted to open or save the PDF file to your local computer.
For users with teacher or administrator access you can review a report of all issued certificates within a course by clicking on the View issued certificates link.
