You can use a custom domain for a site published on new Google Sites. Using a custom domain can make it easier for people to find and remember your site with a web address like www.yourdomain.com. To use a custom domain for your site, you can: Select a domain from your Google Domains account (if you have one).
Domain server:- GoDaddy.com(Host server)
Add TXT Record for verify ownership at Webmaster central ..
Google site :- sharma online store ..(Website home page name )