How to create a Fillable PDF Form from word document.

Unfortunately, a Fillable PDF Form can not be created from a document. You need to build your web-form first: https://www.jotform.com/help/2-How-to-Create-Your-First-Web-Form, then you can turn your form into a Fillable PDF Form: https://www.jotform.com/help/212-How-to-Create-a-PDF-Form 

Please note that there are some features that are not supported for Fillable PDF Forms, please check this general guide: https://www.jotform.com/help/312-JotForm-Fillable-PDF-Creator-with-All-Points