How to upload an Interactive PDF once completed

I can make an interactive PDF quite easily and made many now. 

But my question now (and i dont even really know how to ask the question really!) - once someone has completed a PDF how can i make it so they can upload it somewhere for me to then to retrieve that data.

I am going to make a questionaire for our local village society members to fill in from a QR code in the printed newsletter, i had thought of doing this using InDesign as i know how to do this. Perhaps ID is not the right product for this, but i know my way around ID so well.  The numbers are not going to be huge, if i got 100 responses i would be doing really well, it might only be a few people to respond. It will go out to about 1000 houses and its first time we have ever done this around the village ! 

I would love some help please in this area, the village society has an (ancient) website, but i dont want it to get too complicated.  Or should i use google docs as a form instead - never done one of those either, although have filled a few in over the years, but not for me collecting that data !

Thanks 🙂