I am trying internal iTunes connect testflight to make beta testing for an app but I need to know if I am an internal tester, in how many devices I can install the beta app?
See here: https://developer.apple.com/testflight/
Internal Testers
Get feedback quickly by sharing your beta builds with up to 25 members of your team who have been assigned the Technical or Admin role in iTunes Connect. Each member can test on up to 10 devices.