Phishing is a type of social engineering attack; a fraudulent attempt to obtain sensitive information such as username, password, 2FA code, etc by disguising as Binance in electronic communication.
This phishing site was created in order to steal users credentials such as account email address password, and 2FA code.In this example, victims on Facebook would click into a manipulated link leading to Binance, only to find that the link points to https://www.binance-co.com/, a phishing site.
In the next page, the phishing site asks the user to fill his Google 2FA backup key. Binance will never ask you (in any case) to input your Google 2FA 16 backup key at all.
Users who fill in the form on this phishing site will be compromising their 2FA.