For high-volume sites, the Google Indexing API is the gold standard for rapid...

https://alexissnicenews.iamarrows.com/how-long-does-it-take-to-see-a-first-googlebot-crawl-the-truth-about-link-indexing

For high-volume sites, the Google Indexing API is the gold standard for rapid updates. For smaller link campaigns, third-party services like IndexInject—which offers plans around $29 for 60 credits—can help get your backlinks noticed within two minutes