If you've stumbled across rr2---sn-p5qs7nzr.googlevideo.com, you're likely looking at a backend server endpoint owned by Google. The domain itself (googlevideo.com) is one Google uses to serve video and other media content for YouTube and other services. In this case, the specific server is returning a 404 error -- the requested resource simply isn't there.
Is it safe? Yes, from a technical standpoint. The connection is encrypted with modern TLS, there's no malware flagged, and the infrastructure is Google-grade. But asking 'is rr2---sn-p5qs7nzr.googlevideo.com a scam' is probably the wrong question. It's not trying to be a website. There's no product to buy, no login to steal, no content to consume. It's just a server address that doesn't happen to have anything at the root path.
If you're here because a link sent you to this address, the link is broken. Look for a different source. For general browsing, there's nothing to worry about -- just nothing to see either.