From some of the transcripts:
So, HE isn't intending to speak in front of Congress, by his own decision, stating everything he has to say is in the report.
It's also another nothing burger in that he didn't say the President is free and clear, nor did he say the President committed crimes. He stated that by law, he couldn't charge the sitting President with federal crimes. But he points out the investigation is allowed in case others could be charged with the obstruction. Where are those charges? It's obvious Trump can't do things for himself, and asks others to do them for him, so if there was obstruction....where are the charges on those who could be charged?
That last bit, about requiring something other than the criminal justice system to formally accuse a sitting president, how it would be unfair to accuse when there can be no court resolution of the charge....wtf? Accepting that the president cannot be charged, and it falls to an impeachment by the Senate (I presume?), would his investigation NOT be building the information to support that charge rather than a criminal justice court? Without losing sight of the confirmed 'no collusion', and instead focusing on the 'possible obstruction' wouldn't the report then provide the required information to support such an impeachment hearing...or not? His words talk about what the process would be, but not if there is or isn't material to support the use of the impeachment (or other) process. Non-statement on his part.
The ONLY thing I'm getting from this which we didn't already have is that he won't talk to congress. Which leaves me wondering why, what is the motivation for this?