Sorry if this has been asked before, but the closest I could find was this, which didn't give a definitive answer, and is also now old, as GM reward rules have changed.
If I GM a mod and apply the certificate to a wizard character, can the character scribe any wizard scrolls listed on the sheet into his spellbook by paying the scribing costs? The current version of the Guide states that GMs get access to any special boons, such as free magical treasure, but I am not sure if access to scrolls for scribing counts.