Hi and welcome to the Board.
The question is a bit vague...
Firstly you must know the password.
Do you want to know the method for unprotecting the worksheet ?
Tools / protection / unprotect
Do you want a VBA macro to do this ?
If you are trying to "break" a password....it is against the rules of this forum to provide assistance in any form to do this and posters will not provide any information to do it !