Collecting in-game data for android app

Hello everyone, i'm kind of a rookie in programming, sooooo sorry if my question sounds silly.
I'm creating a little mobile game for an internship . This game aim is to be played by children with a disability in order to see if playing this little game can help them overcome their disability.
I need to collect in-game data (like percentage of good move, time they use to answer a question...) from their play in order to understand how they play and how they progress. The game must be play on a daily basic so it need to be accessible on a phone or a tablet.
My first idea was to save the data on a JSON file and store them on the google play cloud, but i guess only the owner of the account will have access to the save file.
I guess i could just let the game store the save file on the mobile and ask for the parent to send it by email, but it will create problem since a lot of people are really lazy, or just not good with mobile.
Is there an option to send automatically these data by mail or store it on a cloud?
It's for medical research purpose, so we have the agrement from the parent for collecting the data. Hope i explain this well. Pardon me for my english quality. And thanks in advance for your help.

 

The general approach to this kind of requirements is to have a website where your game clients can send the information you're gathering.
If you're not familiar with any of this, I would recommend partnering with a web developer that can setup the server for you and help you store the data you need.

 

Thank you a lot and have a nice day

 

You can use playfab.com for something like this. Their API is pretty easy to use. Pretty active forums and a free tier.

If you want to go big. Go with any of the cloud services. AWS, Azure, Google cloud.