My 6 month old pitt bull is acting really strange. He acts like he don't want to eat or drink I've been feeding him chicken and rice and giving him water with a syringe.
He don't want to play he's up to date on all his shots.
Hes stoll looks fine he also acts like he's back paw hurts.
I don't no what to do.
I don't have much money please help!

You have to find a way to pay for a vet. This is what you 'agree' to when you take on having a dog.
We can't possibly know what your dog has. He may have contracted parvo before his shot for it. He may have a broken bone in his foot or leg, or something medically wrong with his leg, and is in pain. You have to go to a vet, and it will be cheaper the sooner you go.

There's really no way for anyone to diagnose online. I do understand not having money, not being able to afford a vet, they're not cheap. Sadly, a vet is really the only option. You will find guesses online, and there are many possibilities for what you describe. You won't get a diagnosis, and you won't get a treatment either.

Not to be harsh, but your options are simple, vet, giving the dog to someone that can afford a vet, or watching your dog suffer and possibly die.

Good luck.