If you are looking to play BioShock 2 Remastered safely and legally, there are several verified ways to obtain it, often at a very low cost. Official Ways to Get BioShock 2 Remastered
Remastered versions of the series are frequently given away for free to Amazon Prime members. BioShock 2 Remastered Free Download (v31.08.2022)
The BioShock: The Collection (including the remaster) is a recurring free title on Epic Games during their seasonal giveaways. If you are looking to play BioShock 2