Slayers Club is Bethesda's official fan club for id Software games like DOOM and Quake. Because it's a subdomain of bethesda.net, the site's ownership is crystal clear — you're dealing with the same company that publishes the games. That alone makes the question "is slayersclub.bethesda.net a scam" easy to answer: no.
The site uses modern security protections, including HTTPS and clickjacking prevention, and has both a privacy policy and terms of service. You'll find an about page and links to official social media channels, though there's no direct contact form on the homepage. That's typical for a community hub that directs users to a support center instead.
If you're looking to join the fan club, download wallpapers, or check out news about DOOM: The Dark Ages, this site is legitimate. The only thing to watch for is that any merchandise links redirect to Bethesda's official store, which is also safe. Overall, slayersclub.bethesda.net reviews are unnecessary — the site's connection to a trusted publisher is the best endorsement you can get.