rr6.sn-jvhj5nu-qufs.googlevideo.com is not a standard website. It's a subdomain of googlevideo.com, which Google uses to deliver YouTube video content. This specific hostname, however, isn't meant to be visited directly. When we tried to access it, the page returned a 404 error and the SSL certificate didn't match the address. That means your browser will warn you the connection isn't secure, and you won't see any actual content.
If you're asking whether rr6.sn-jvhj5nu-qufs.googlevideo.com is a scam, the answer is no — it's part of legitimate Google infrastructure. But it's also not functioning as a proper web page. There's nothing to review or trust in the usual sense. This kind of hostname appears in network requests behind the scenes when you watch YouTube, not in your browser's address bar. So you don't need to worry about it being fake, but you also shouldn't try to use it as a site. It's basically a dead end.