Google doesn’t always crawl every page on your site instantly. In fact, sometimes, it can take days and even weeks. This happens because Google has a Crawl Budget.  The crawl budget is the number of URLs Googlebot can and wants to crawl on a website.  This is one of the key factors in determining how visible your website is on the SERP or Search Engine Results Page.  If your pages don’t get crawled, they won’t be indexed and displayed in the search results.