I went digging for this, and their SEC filing for 2024 mention they have a stay from the Irish High Court.
> The IDPC issued an administrative fine of EUR €1.2 billion as well as corrective orders requiring Meta Platforms Ireland to suspend the relevant transfers and to bring its processing operations into compliance with Chapter V GDPR by ceasing the unlawful processing, including storage, of such data in the United States. We are appealing this Final Decision and it is currently subject to an interim stay from the Irish High Court.
