It's a scam. You will not validate for surveys. They'll tell you AFTER a survey.

Is my free Steam keys legit?

FreeSteamKeys is a site that…

FreeSteamKeys is a site that automatically shows the free games online. If companies are giving away steam keys or hosting their game free for a limited time for you to download, FSK has it and lets you know about it! ... Overall, super easy website to operate, and it's super legit.

Are game key sites legit?

Sites like G2A are legitimate in the sense that you will pay less for games and receive a working key that you can use on services like Steam. ... While “legit,” buying games through sites like G2A, Kinguin or CDKeys can be less convenient than official stores.