Forgotten my MacBook Pro password

Please see the password change options in Change or reset the password of a macOS user account - Apple Support

I'm guessing your MacBook Pro is probably the new Apple Silicon chipset, so you might also need to read How to reinstall macOS - Apple Support for the hot key options to get into Recovery console mode. The old Ctrl+R has been replaced by holding the power button during startup.

MacBook Pro Mi (Apple Silicon)? Extreme right hand end of the TouchBar, also functions as the TouchID sensor.

https://manuals.info.apple.com/MANUALS/1000/MA1968/en_US/mbp-13-inch-m1-2020-qsg.pdf