Sometimes, applications get updated and because of that various things change and Norton might detect those apps as being infected or presenting a High Risk due to the permissions, but it's absolutely necessary for apps to require certain permissions like Camera access, photos storage, contacts etc., because those items are used within the application.
On a second note, I wouldn't recommend Norton for anything that involves protection. It slows things down, although it got pretty high ratings when it comes to PC and device protection.