The audit section showing how often Google shows your site, your clicks, and the trend — from Search Console.
When you connect Google Search Console, the Search Visibility section reports how often your site appears in results (impressions), how many clicks you get, and which way the trend is moving. It's the closest thing to a vital-signs readout for your search presence.
Without a Search Console connection, this section is limited — connecting it is what makes your real performance data available.
What to do about it
Connect Search Console to populate this section. Then watch the trend after you ship foundation fixes — rising impressions and clicks are the payoff for getting the foundation right.