How can I share a fill-in file but others cannot edit the information you filled in? I was able to share a file after I add information but share it in a way others could not change the information on older apps.
I would say that the best way you can go about this is to create the form in your Acrobat Pro DC desktop version and apply a certify invisible signature with the Certificate tool before you send the PDF to your users.
With your file opened in Acrobat Pro (desktop version), right-click on the certify signature field, select Properties from the context menu, and go to the "Signed" tab.
You'll see there a few optuions that you can configure to restrict which objects or portions of your PDF will be inaccessible to the other users (make fields hidden and/or read only, for example).
That said, only when you clear this signature those field objects will become editable again.
In addition, I would use the "Save as Other" option to save this document with Reader enabled rights and also protect the document with password to restrict users from editing, copying or re-assembling the form, for example.
Last, send the form using Adobe Sign so you can distribute a signing order and assign signing blocks to each specific user.
Using this workflow also guarantees that the users will be able to fill and sign from a mobile device or web browser without the need of Adobe Acrobat or Adobe Reader.
I know this answer is long and it sounds like a lot, but is very straight forward with the available tools.