You verify ownership of your site, then get access to data Google will not share anywhere else. The performance report shows queries, impressions, clicks, click through rate and average position. The page indexing report shows which URLs are indexed and why others are not. There are reports for Core Web Vitals, mobile usability, structured data types Google recognizes on your pages, sitemaps and security or manual action notices. It is the only source of first party query data since Google stopped passing keywords to analytics, and it keeps roughly sixteen months of history.
Any service business paying for SEO should have access to its own property, not just the agency's. Two habits cover most of the value. Check the page indexing report monthly for pages dropping out of the index, and review your top queries quarterly to see what people actually type on the way to calling you. Those queries routinely differ from what the business assumes. A clinic may find most of its impressions come from a symptom phrase nobody internally uses, which is a page waiting to be written.
Send the site over. We will tell you what is broken, what you could rank for, and whether AI search knows you exist. No charge and no pitch deck.