Hi , I need help with creating form for mortgage application ,

You may check out our sample form templates:

https://www.jotform.com/form-templates/mortgage-application-form

https://www.jotform.com/form-templates/mortgage-loan-application

OR you may create a new custom form as per your requirement.

Here are few related guides for reference:

https://www.jotform.com/help/chapter-2-create-forms

Let us know if you have any further questions.