Reporters are asking Trump why he retweeted #FireFauci, and Trump says a string of words in response, but the words have no meaning. They're just words.
Every answer is the same: I am great, the media is terrible, we did amazing things, we did no bad things.
Fauci is what it looks like when the Trump Administration finds it valuable to have a government official who can effectively sustain a media narrative about their supposed independence.
Trump does what he always does when he's asked a question which requires an answer with informational content: he says he'll give an answer later.
This question does not require a response that contains information, so he just says some words arranged in no particular order and conveying no factual content.
Trump could have chosen to just say words again, but instead he generously (and unusually) interprets the question as one that requires a factual response. Which means Trump refuses to answer the question.
Trump gives the same answer he always gives: no such problem exists, and also the thing that is not a problem is Obama's fault.
Trump says random words, but the reporter asks the question again. He angrily tells her "Enough!" and moves on.
This is what Republicans want in a President.