Trouble with .bin files in an older game

I recently downloaded Sonic Adventure 2: Battle and was wanting to make a mod for the game. I dug into the game files looking for the SetChaoRaceHero file and saw that it was a binary file. I don't have much experience with them, but I figured I'd get machine code when I opened the file up, but all I get is jumbled nonsense (ex: Cñ#nBÄCˆzs¿). So my question is how do I convert it to readable text? I need to see how the game handles certain things so I don't break the game or run the risk of not even being able to run my mod.