Hi @Gloria1012, I wanted to share this article that outlines disputing a retaliatory review and Airbnb's Reviews Policy. I hope it helps you get some information about this process and policies related to reviews.
Just as our super-experienced member Helen suggested, did you get in touch with Airbnb Customer Support regarding the guest's review?
Keep us updated on how it is going for you.Hope you have gotten past this situation with the guest! Wishing you smoother guest experiences for your future bookings🌻.