What this tile shows
Frequently different from the words you use about yourself, which makes this the most useful page-copy tile in the catalogue.
Squizzie calls this one Top Search Terms. It is a small table rather than a single figure, so it carries a few rows of detail on the tile itself.
Where the number comes from
Google Search Console. Organic search performance: clicks, impressions, position, and query data.
What you need for it to appear
A connected Google Search Console property, through the same single Google sign-in.
The fuller picture
This is one figure out of a bigger subject. Search rankings and your local listing covers it properly.