You may find archived versions of the game on Internet Archive , which is generally considered a safer repository for historical software than pirate sites.

You can still purchase physical PC discs from retailers like eBay or Amazon.

Since the game is considered "abandonware" by some communities, you can find safer ways to experience it:

Downloading from "Apun Ka Games" is not recommended due to significant security and legal risks associated with that site. The 2K series was officially discontinued in 2014, and the game is no longer sold on primary digital storefronts. Risks of Using Apun Ka Games

Downloading "cracked" or "free" versions of copyrighted software is considered copyright infringement, which is illegal and can lead to legal consequences. Safer Alternatives for MLB 2K12

If you want a modern baseball experience on PC, consider Super Mega Baseball 4 or using Xbox Cloud Gaming to play MLB The Show 24 (via Game Pass). About MLB 2K12 Major League Baseball 2K12 Review - IGN