Know root password complexity

Hello everyone, I'm new to the forum, I wanted to know if there was a way to know the complexity of the root password without knowing it exactly.

I do not know if any encrypted record or file is generated that can show any indication of it.

It may seem absurd, but there are cases where we do not know the root password but we have to do a security audit on the server and I don't want to be asking for the password every time I have to check it.

Thanks, androsob