The Personal Bests section of the My Stats module is where you can find all of your personal bests in the metrics configured by your administrator. Depending upon the configuration of your Personal Bests feature, achieving a new personal best can automatically generate an award certificate which is emailed to the user and, optionally, admin(s) as well.
In addition, by clicking on each individual metric, you can view the history for that personal best to see how you've performed on a particular metric over the course of your career.
Clicking on the View Awards button will open a modular window where you can see all of the awards for you or the selected user, including viewing the PDF version of the award certificate.