While Google will eventually index your blog or website on it’s own it’ll speed things up dramatically if you submit your sitemap to Googles Search Console.
Log in to your google search console and click on Sitemaps from the left menu.
In the Sitemaps window enter the location of your sitemap into the box and press Submit.
After Google checks to make sure it can fetch your sitemap you’ll get a message letting you know if it was successful. If it wasn’t then double check the url you entered is valid.
Click Got It.
Your sitemap should appear in the submitted sitemaps table.
It will still take google a while to index everything in your sitemap so don’t expect the Discovered URLs column to suddenly shoot up!