How do I retrieve or reset my Quicken Vault password

You've posted this in the Mac forum - but QMac does not have a password vault like QWin, instead, all passwords are saved in the login keychain.

Could you confirm if you are really on a Mac, and if so, where you run into a problem?

If you are on Windows, please re-post your question here:
https://community.quicken.com/categories/quickencommunity_bank_accounts_downloading_and_categorization_windows