Hello Mitchell Taylor,
Thanks for your question.
You need to backup your credentials in authenticator, if ths was not done unfortunately you can only resolve this by contacting support
https://bitwarden.com/contact/
See Bitwarden documentation here:
https://bitwarden.com/help/two-step-recovery-code/
You can mark it 'Accept Answer' and 'Upvote' if this helped you
Regards,
Abiola