I have just changed my Apple ID, but made a typing error. No verification. Not searchable via find my Apple ID Just logged in to amend settings on my Apple ID. When entering new email, must have typed it wrong. Never received verification and now can't log back in.
Can't 'find Apple ID' as I don't know what my typo was.

How else can I retrieve it as am now logged out on all my devices.
Open Keychain Access which should be in Applications > Utilities and search for "apple id" and it should show you the email address you used.