how do i connect jotform with bank account as a form of payment

When it comes to payment forms, you can only use any of the integrated payment gateways we have available:

https://www.jotform.com/help/47-Order-Form-Basics 

Please check this guides:

https://www.jotform.com/help/49-Order-Form-Types 

https://www.jotform.com/help/165-Setting-Up-Your-First-Order-Form 

Let us know if you have more questions, we will be glad to assist you.