Download file after fill in data

It will just be a normal contact form or some kind of a custom form?

Im going to jump in on this. Could it be a mailchimp form? I want to collect the emails of anyone that wants to download my file.
Thanks!

We have this on our to do list for adding this feature the plugin.

You may want to check our following plugin for it in the meantime. It has a nice squeeze form feature which will do what you asked for:
https://www.tipsandtricks-hq.com/wordpress-estore-plugin-complete-solution-to-sell-digital-products-from-your-wordpress-blog-securely-1059