No, the Facebook Class Action Lawsuit is not a scam. Anyone in the United States who used Facebook between May 2007 and December 2022 can now get a share of a $725 million Facebook data breach settlement by parent company Meta. But, in order to do so, they must file an online monetary claim on or before Friday, August 25, 2023.
The Class Action Lawsuit Message from Facebook

The settlement stems from multiple lawsuits that were brought against Facebook by users who claimed that the company improperly shared their information with third-party sources such as advertisers and data brokers. The litigation began after Facebook was embroiled in a privacy scandal in 2018 with Cambridge Analytica, which scraped user data from the site as part of an effort to profile voters.
Meta denied any liability or wrongdoing under the settlement, according to the recently created class-action website, set up to pay out money to the social network's users.
People who send in a claim via U.S. mail must have their letter postmarked by August 25.