Water.
What are your workout goals? You mentioned your weight. Are you doing this to lose fat? Build muscle? Both?
Recovery drinks are for performance enhancement. They can be counterproductive for weight loss since you are basically drinking all the calories you just worked off. That’s okay if you’re training for performance reasons. You want to give your body easy calories to so it can replace all the fuel it just burned off. But if your goal is weight loss, you don’t need them. Water is fine.
Make sure you are getting enough lean protein in your diet so your body can rebuild muscle as needed. You don’t need protein drinks unless you are training to bulk up.
I’d recommend doing something other than P90x at first. It’s a good program, but not for a beginner. Take a look at something like ATLETICA