Quality score is an indicator that Google uses to determine the relevancy of the ad to the user and determines whether to show the ad on top or bottom of the results. It is the single most important factor that contributes to ad performance and is, therefore, a very important metric to keep an eye on.
If your quality score is poor then your CPC naturally shoots up, thus increasing your overhead costs.
A high-quality score means that the user is more likely to click on your ad and see your website.
Google’s algorithm analyses the Quality Score in a number of ways: the keyword, the ad copy, the landing page, the keywords on the landing page, and the historical performance of your account.
Dive into the nitty-gritty of generating leads with Google Search Ads in my latest article. The link is in the comment section!