Bestfy.com has been around for over a decade, which already puts it ahead of many fly-by-night betting affiliate sites. It's based in Spain, operated by a disclosed business, and has a proper privacy policy and terms of service in place. For a site that makes money by directing users to sportsbooks, that level of transparency is a good sign.
What gives us pause is the technical side: the page loads 67 external scripts and hides 30 elements from view. That's a lot of tracking and potentially affiliate code that could be injected by third parties. While this is common in the gambling affiliate industry, it means you should be careful about where links take you and what cookies are being dropped.
Most legitimate betting tip sites have a similar setup: good domain history, clear contact info, and heavy use of ad networks. Bestfy fits that pattern. If you're wondering "is bestfy.com a scam?", the evidence says no — but it's still smart to use an ad-blocker and avoid sharing personal data beyond what's necessary for a newsletter signup.