I've watched the interviews and Fauci's comments have been inaccurately reported by many, including Trump. Two days ago at the Lincoln Memorial, Trump said "You go back and you take a look at - - even professionals, like Anthony, were saying 'this is no problem, this is going to blow, this is going to blow over.'" In fact, Fauci correctly stated back in January and February that the risk to U.S. citizens "right now" and "at this moment" was low, but that things could change and the virus had to be taken seriously.
Finally, with respect to Trump "listening" to Fauci, we all know that Trump rarely listens to anybody. Remember that Trump is one of the great minds of all time, the stable genius who "knows more about ISIS than the generals," the guy who regularly dazzles experts with his brilliance, and has everything he needs to know "right here" (points to head).
But the "I listened to Fauci" narrative works very well for Trump right now, as it allows him to serve up Fauci as his latest fall guy.