On the EA Store, you can search for "Battlefield 2" and follow the download and installation instructions.
You're looking for a highly compressed version of Battlefield 2 for PC download. Here's some relevant information:
To install the game, extract the RAR file using WinRAR or similar software. Then, follow the installation instructions.
If you're downloading a compressed version, you'll likely need a crack to activate the game. Be cautious when downloading cracks, as they can contain malware.