내게 고마워할 겟까지는 없어 “겟까지는” should read “것까지는”. You are right. It means “You don’t need to thank me”. Its word for word translation might be as follows, though it may sound weird to the English natives. There is not (such) a thing that is to the extent that you thank me. 고마워 할 것 = something to thank sb for 까지는 = to the extent 없어 = There is not …

there is no need to thank me. 내게 고마워할 필요는 없어

I think is " Until I have a bit of respect or not "