1.Landing page Relevance: Landing page  is a measure that Google Ads uses to estimate how relevant and useful your website's landing page will be to people who click your ad. Landing pages with higher ratings are usually well organised and have text that relates to a person's search terms.

2,Keyword Relevance: The term "keyword relevance" refers to the degree to which the material on your website is relevant to the keywords you've selected to optimise it for (in this case, "keyword optimization") That is, the keyword that I will save is title, description, and site link.

3.Ad copy relevance: Ad copy is content that encourages a potential buyer to take action and purchase a product. By invoking an emotional response, communicating value and addressing doubt, effective ad copy can increase a company's sales and profits.

4. Overall account Quality: The 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). This is represented on a scale of 1-10, with 1 being the lowest and 10 being the highest. You may check your Quality Score by looking at your keywords report.

5. Click Thru rate: Clickthrough rate (CTR) can be used to gauge how well your keywords and ads, and free listings, are performing. CTR is the number of clicks that your ad receives divided by the number of times your ad is shown: clicks ÷ impressions = CTR. For example, if you had 5 clicks and 100 impressions, then your CTR would be 5%.What is a good CTR for Google Ads? The average CTR for Google Ads is 1.91% for search ads, and 0.35% for display ads, according to the latest research. Search ads tend to have higher click-through rates than display ads for two key reasons. First, these ads show up when people are actively searching for something.

6.Historical performance : Google score will be given to you depending on how you are giving ads in the past, how you are getting clicks and how you are selling. It is a historical performance.