Your Quality Score is determined by the quality of your listing. This can be improved in a variety of ways such as - multiple property images, a descriptive title, in-depth property details etc.
You can learn more about this here: https://propertyfinderae.zendesk.com/hc/en-us/articles/213069945-What-is-the-listing-quality-score-and-how-can-I-improve-it-