A crawl budget is the number of pages Googlebot is allowed to crawl on your website every day. You can use this metric to determine whether you need to free up some resources (e.g., bandwidth, CPU usage) so that Googlebot can crawl more pages on your site.
You can also use it as a way to measure how efficiently your website is being crawled by the search engine! Improving your website’s crawl budget can help improve its overall SEO ranking over time.