Can anyone help me? Which series and episode is it where they are all fighting over the realtime patient feedback machine?

Try to find it on episode list!!! Don't say that i didn't help u cause i did!!! I know that there's 8 seasons of Scrubs, but if u really wanna know this, you're gonna check the episode lijst of Scrubs!!!

Are u talking about the "Rate Your Doc.com" website?

If so, that is "My Number 1 Doctor" s07e06.