@KRPX:
I am sorry to hear about this. For your privacy and security, your Master Password is not stored anywhere, only you know it. This means that it is not possible to recover it unless you are a member of a Families or Business accounts. If you are trying to configure an old standalone vault, I recommend reading this article to try and recover your Master Password:
how about I just want to back up new 1password to icloud instead? but it does not allow me to do so. It only asks me to merge option.
You should see an option named Erase iCloud Data under 1Password Settings > Advanced, if you are absolutely sure you will not be able to remember this Master Password, and you would like to start with a new empty vault.
