Login to Apple tv through cyberduck

I have watched the tutorial on how to login to Apple TV via cyber duck using a username and password (this point was glanced over in the tutorial video) i have no idea what this user name and password is and how to obtain it?

can anyone help explain what a) is actually is and b) how do i try obtain it?

i’ve searched around for a couple of hours on the internet for help with no luck.

Username and password are both frontrow.