Generate and edit Post requests from forms on the site to the server

Site created by WordPress
There are 3 forms: Quick Order, Shopping Cart, Regular Form

It is necessary to transfer data from them to the server. He will turn them over to the AMO.
There are developers on the side of Amo they need it and we are looking for someone who understands it and can do it.

"Tell me what the post request is like when you can send a sample request to a test URL https://webhook.site/"

Who understands what it is about write your cost