I have my deceased husband’s phone. How do i reset the pass code without doing a factory reset. Someone keep trying to access and got me locked out a few months ago

How to request access to a deceased family member's Apple account - Apple Support

You cannot get access to his phone if it is disabled; it must be reset to factory conditions. After resetting you can restore a computer or iCloud backup to recover its contents. I see other user-volunteers have provided a link on gaining access to his Apple account.

This is how you can --> --> How to request access to a deceased family member's Apple accounts - Apple Support

Keep in mind if someone else kept trying to guess the passcode more than 10 times and the phone went into disabled mode all the data on that phone is gone.