You can't if you did not save them.
The way to resolve this is to request for Product Support to reset MFA for the affected users. Contact Product Support with the email address for the affected user.
If you have other social accounts or non-microfosoft accounts you need to contact their support for those accounts
https://azure.microsoft.com/en-us/support/create-ticket
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola