Word / PDF File: How do I upload it to build out the fields that need to be filled in?

Thanks for getting back with me. I have a form built in word and pdf. How
do I upload it to build out the fields that need to be filled in? Thanks!
...

Unfortunately, we do not have an option to convert a word or a pdf document to a web form. 

I would like to suggest adding your fields via form builder, please see the next guide.

How to create your first web form

We also offer form templates which can be cloned and modified quite easily.

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

Thank you.