On a scale of 1-10, with 1 being the lowest and 10 being the highest, Quality Score is Google’s rating of the overall user experience that your ads and landing pages provide when users search for your keyword(s).
Quality Score can be used a general guide for whether your ads and landing pages are useful to someone looking at your advert, rather than as a strict code to adhere to.
There are currently 3 known factors that are used to help calculate your Quality Score:
- Expected CTR
- Ad Relevance
- Landing Page Experience