I password protected my tax file, but when I launch the file, it goes immediately to where I left off without asking for the password
The password protect feature is not working
The password protect feature is not working
That has nothing to do with TurboTax, that is the built in Mac Keychain feature to remember and enter passwords for you.
https://support.apple.com/guide/keychain-access/what-is-keychain-access-kyca1083/mac
You must be sure the Remember in Keychain is unchecked if you do not want auto-login.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.