How to link form to Facebook Shop Products

How can i connect it with my facebook order form?

Jotform has payment forms which will enable you to setup products in your form and accept payments from your form.

Since you can add your order form to Facebook as shown in the guide below, you will setup a Payment form then embed the form to your Facebook page.

https://www.jotform.com/help/323-Mastering-Payment-Form-Integrations-with-JotForm

https://www.jotform.com/help/chapter-7-Payment+Forms

This is the most efficient way I can think of enabling you to have a Facebook shop linked to your form.