But even before I get those answers, here are some critical changes that need to be made:
(1) Get rid of the UVB bulb that came with that godforsaken (you will quickly learn from longtime members of the community that these kits offer hardly anything useful other than a small cage you will need to upgrade from in just a few months) chameleon kit. The kits are really just a way to trick people new to the hobby into spending money on products that they either don't need or that are bad for their chameleon. What you need instead is a linear tube style of UVB light like a reptisun 5.0 or an arcadia bulb if you have the extra money to spend. The compact bulbs they sell with the kit are very bad at distributing UVB light and are notorious for causing eye problems.
(2) Get rid of the substrate at the bottom of the enclosure. It is going to do nothing besides get sopping wet, grow mold, and become a source for a future respiratory infection or impaction if your chameleon accidentally eats any of it.
(3) For your heat bulb, the trick is really just finding the right combination of bulb wattage and distance above the basking spot. It may involve a lot of guess-and-checking, but you'll figure it out. All you need is a regular household incandescent light bulb. Do not use colored light bulbs like the blue one that came with the kit or a red one. White light only.
(4) This a really big one, from what I can see of your setup so far. You need to add many, many, many more specifically horizontal branches/vines/walkways for your chameleon to walk on. They feel comfortable when they can sit and walk parallel to the ground. The diagonally-placed sticks you have do very little good for your cham's mobility. They can't get nearly close enough to the basking spot or UVB bulb as it is currently set up, which means they cannot metabolize properly or receive the UVB thast is essential for their health. You can fasten branches and vines to the screen using things like zipties, pushpins, eyelets, etc. You are also going to want to add much more foliage in there. Chameleons need the options to hide to feel comfortable and secure, plus the additional live plants will do wonders for your humidity. Ficus, pothos, and schefflera arboricola are all good options to fill the very large amount of empty space you currently have