In the Site Audit, Ubersuggest tries to crawl as many pages of the domain being analyzed as possible. It is important to be aware of your plan limits in order to identify how many pages the tool will crawl for that specific website.
The summary of their status (our codes) will appear on the “Pages Discovered” board.
Ubersuggest won’t show you any details of the website's Health Check, and there is no direct correlation with the “Critical Errors”, “Warnings” and “Recommendations”.
For example, a page can have a healthy status, missing a <title> (which would appear in “Warnings”). If you need to access those issues' information, then you have to refer to the SEO Issues Discovered board.
Overall the Pages Discovered is a picture of the stats of your pages, it will show you successful, redirects (code 301 and 302, for example), broken, and blocked (robots.txt instructions), and the ones with issues, and these will be the ones with more details and information to fix it.
If you need a deep context of the Site Audit feature, please refer to the following articles:
Understanding the Site Audit
Site Audit Pages Discovered Section