Thank you for your interest in Syncfusion products.
Regarding "Creating template word document with Form Fields and filling the same with values from data":
We have created a simple sample to create a template word document consisting of Form fields as well as with the option to fill the form fields with the entered data and generate the output document. Please find the sample from below link.
Here in the sample, Click "Generate Template" button to generate a template word document consisting of Form fields.
After entering sample data, Click "Fill Form" button to generate word documents with form fields filled with data.
For more information on form fields, refer below link:
Regarding "PDF to Word conversion": Currently DocIO does not have support to convert PDF format into Word format.
Please let us know if you have any questions.