AG Barr will probably redact anything that could criminalize Trump and Trump will probably use executive orders to hide anything else he sees as bad which will lead us into years of legal battles.
Trump will also say he read the report and that it clears him of any wrong doing, but that he doesn't have to release it because believe him.
And then for the rest of his presidency the press will ask him if he is going to release Muellers report and he'll say.
"I tell you I'm thinking about it, I'm thinking about it. I'm thinking I might do it sometime in the near future. I don't really need to because it clears me of any wrong doing. Let me tell you this was all a tremendous waste of time. Mueller's a very arrogant bad man. Bad for The country. The economy is doing really really good folks. Really good. Trump is good for the country."