@Chris294, would it be your first or second review as a host? Only after the third review a star rating will appear on the listing, this is to ensure it is more than a lucky shot I guess.
Due to a glitch in the platform, I can't go to your profile and see your listing(s). Can't be sure if this is it, but I hope it's just a case of hosting a couple of more times!
Have you given your guest a review? AirBNB will only post a guests review on your profile of both the host and the guest have reviewed the stay. Hope this helps.