@Aldo_Kremm you can already add “Additional Email Addresses” in the “Personal Settings” section on the PractiScore website.
@Aldo_Kremm @Ryan_Fuller also note that match results aren’t hard-linked with the match registration data on PractiScore. Competitors can be entered on the scoring tablets and then match results may not have any emails or USPSA# associated in the match results (for the latter you can check the html version in USPSA results to see if MD added your membership number).
If you want a more flexible way to search for matches (by match name, by member#, by email, etc) and more - take a look at a one-time paid app called PractiScore Competitor. Though it worth to mention, that app is NOT linked with your profile on the PractiScore website and instead it let you to run searches and then download and save match results for offline viewing.