Where is the data folder in Android?

All apps (root or not) have a default data directory, which is /data/data/<package_name> . By default, the apps databases, settings, and all other data go here.

How do I access data on Android?

Access private files

GUI — In Android Studio, launch Android Device Monitor from the menu: Tools/Android/Android Device Monitor. Navigate to the File Explorer tab, then data/data/<your app package name>/. Find the file you are looking for, and you can push and pull a file from there.