If you've come across rr4---sn-vgqsrnsy.gvt1.com and wondered whether it's legitimate, the short answer is that it's part of Google's infrastructure. The domain ends in gvt1.com, a known Google-owned domain used for serving content across its network. The site itself returns a 404 error and contains no page for visitors to interact with. That means there's no shopping, no login, no data collection happening here at all.
In terms of safety, the signals are clean. The SSL certificate is valid and issued by Google's own certificate authority. The server is hosted on Google's network and no blacklists have flagged it. The absence of an about page, contact form, or privacy policy is entirely expected for a server that isn't meant to be a business website. If you saw this domain in a link or a resource, it's likely just a cached piece of content accessed via Google's servers. There's no reason to treat it as suspicious, but also nothing here for a regular user to engage with.