BrightTALK does not certify CPE/CPD credits, that responsibility lies with the Channel Owners and/or presenters of the webcasts. Some do choose to award points for participation in their events. However, this would be carried out independently of BrightTALK.
If needed, you can get a simple list of the webinars that you have viewed if you go to the "Recently Viewed" page using the link at the top of the MyBrightTALK homepage.