Got it. vs I got it.
Boss – Please have this ready by Friday.
You – Got it! 收到！
You – I got it. 我来吧/我有把握某事。
Scene 1: When somebody knocked the door, Phoebe said, “I’ll get it.”
Scene 2: You and your friends are leaving the door, and your friend’s asking, “Where is the key?” you said, “I got it.” [I have it. 在我手上，我拿着呢。]
I got this under control.
Scene: Joey – You know I don’t think you should be talking at all in there. Ross: Ok, ok, you got it!