Hi,
The question is not Clear. Anyhow i try to answer.
You can add this new password to SuiteCRM config file DB CONFIG array index.
If you are using Linux, and you are on a Lamp Stack, then you can do it either by command line
https://www.a2hosting.com/kb/developer-corner/mysql/reset-mysql-root-password
or by files
https://dev.mysql.com/doc/refman/8.0/en/resetting-permissions.html
Hopefully this will help you.