How to display the necessary information from 1s to the WordPress site?

Question

1C

The task is this, you need to organize a regular input field and a submit button on the site. The client in the field enters the order number that he has in the documents. And below, under the field with the button, information on the order from 1s is displayed to him (where there will be information on the readiness of his order. Type pending, in work, ready) how to make such a handler?

Answer 1

Everything is well described here. Here is a similar question . And here is the documentation.
The rest of the answers can be found here .