dynamic pages

Hello together, I have a customer with a dynamic website for the first time. He offers services nationwide and accordingly the pages are adapted to the cities. The sitemap is comparatively small (about 150). Now since yesterday the site analyzer is running and comes up with about 70.000 pages...

Good day to all. :) I was wondering: How does Google view dynamically-generated pages, in terms of backlinks? For example, if I were to place a link on a site with such a configuration, the page returned would be something like: htxp://site.xom/list/index.php?search_key=23423423423423443243...