Your chameleon looks very dehydrated. I would recommend you find a vet. I gather you are in Kuwait where there will be avian vets for all the falcons. An avian vet often has training in exotics--birds and reptiles have more in common than either have with mammals.
Your chameleon is probably a wild caught with all the problems wild caughts face.
Subcutaneous fluids would be the first think I thing your chameleon needs if you can find a vet who can do it safely. That's the quickest and most efficient way to rehydrate a dehydrated animal.
If you can't find a falcon vet, call a zoo and ask for their suggestions.
I don't know the salt content of your tap water, so I am hesitant to recommend a standard "shower" rehydration method. A lot of the Middle East water (I assume that's where you are) comes from desalination plants and they don't take all the salt out. Use bottled drinking water for misting.
You might have to mist for many, many minutes to get the chameleon to start drinking. Sometimes they drink by just sort of opening their mouths, almost like they are licking the air a bit, and getting water that way. It's not very efficient, especially for a dehydrated animal. You can set up a dripper as well. Just take a bottle of water, put a pin hole in it and set it on top of the cage and let it drip onto leaves and splash down the cage. The water movement often attracts them.
I lived in KSA for 11 years so understand some of the problems you are facing. Good luck.