Chances are unless your website is brand new, Google has already crawled and indexed it. If you want to be sure, a quick, easy trick to check is by searching site:yourdomain.com in Google.
If Google has crawled your website before, you’ll see a list of search results for your pages.
If you don’t get any results, first check to make sure there weren’t any typos in your query. If everything looks correct but you’re still seeing zero results, it’s time to take the next steps to index your website.