Welcome @NarelleMaxwell
Member services will be able to change it for you. Support@trustedhousesitters.com
I think there is a problem in the current review system star rating as this is a frequently reported issue . ( see threads below )
https://forum.trustedhousesitters.com/t/5-star-review-mistake-destroyed-my-overall-rating-on-ths
https://forum.trustedhousesitters.com/t/reviews-the-problem-of-the-stars
https://forum.trustedhousesitters.com/t/1-star-review
https://forum.trustedhousesitters.com/t/ho-leaving-a-great-review-but-no-stars