I would like to hire a professional to repair this tall sign. It's mostly metal work. Alot of this is rusted. Especially the middle box. That box probably has to be completely rebuilt due to rust. Or put a new box of the same size. The bottom of the top box has some rust and bad sheet metal/frame.
The lowest box is bent and needs to be straightened.
Then it would nice to paint them. I have ladders but the ground is not leveled.