Q.jacaranda tree
i live outside of lasvegas nv and its been about 115 degrees during the day and my littletrees leaves are turning brown and drying up I bought a shade from lowes and put over it, will it help? I water it every night and I don’t know what else to do

Shading will help, keep the trees watered. Slow trickle of water to water deeply into the soil.
https://www.gardeningknowhow.com/ornamental/trees/jacaranda/jacaranda-tree-information.htm
You are doing all you can do, hopefully the temps will cool down.