Create custom fillable form

I want to create a pdf form template.

This template should import data from a source (xml, database, excel, txt).

One dataset has a specific amount of fields - but I don't know how many datasets in the source (for one recipient).

So how can I create continuous like form with Acrobat DC?

And after importing this custom data - how can I save this in a separate fillable form - send to the recipient (with previously imported data, but, some fields, must be still editable).

Thanks.

Falko