Quality Score is an effective tool that Google Ads uses to evaluate the different ways that you can improve your campaign performance. It indicates the precise factors that require improvement. The following are some helpful measures that you can use to improve your campaign performance.
 Review the three components of your Quality Score (Expected click clickthrough rate, ad relevance, and landing page)
 Create ads that are relevant to your keywords
 Find ways to improve your clickthrough rate (CTR)
 Update your landing page
 Use Quality Score in conjunction with other metrics