Hello,
It is important to define your exact needs: if you need THE passwordt that was used to protect the file, this is actually not possible in a quick way and is very time-demanding. However, because of the way Excel passwords work, it's very easy to find A password that allows to unprotect the sheet, and this can be done within 1 minute. If you accept my bid, I will provide you with the code needed to do this, so you are able to this yourself in the future for any file.
Best regards,
Tom
PS: anyone asking more than $30 for this project is a very dishonest person, as this is really only 1 minute of work!