Q.My watermelons are getting eaten by a black and red bug
Some of the leaves are all curled up and look like black tiny bugs on some, and all the ends of the vine are eaten.

Certified GKH Gardening Expert
I'm sorry, your photo did not come through. I will be unable to identify the pest at this time.
My best guess from the description will be a Boxelder Beetle, or one of the many "Squashbug" beetles.
Here are a few articles that will help you in the meantime: https://www.gardeningknowhow.com/plant-problems/pests/insects/controlling-boxelder-bugs.htm
https://www.gardeningknowhow.com/special/organic/what-are-organic-pesticides.htm