Welcome to Just Answer. What kind of safe is it (Sentry, First Alert, Fire King) and what model? Do you have the serial number? It should be in the instructions that came with the safe.
Looking forward to hearing from you,
Thanks for the additional information. This is one of the most frequently asked questions we get.
Sentry safes are wonderfully secure. However, they can only be opened by contacting the company directly for the lost combination. They have a wonderful Customer Care department that you can reach through this link:
They can fix you right up. I'm sorry it cannot be done any other way, but there is nothing I can do about that, so please don't rate me negatively because of something I can't help.