That is one heck of a bombshell interview.
In it, he completely confirms everything that everyone already knew, except for the new revelations about surveillance of Yovanovich which, had they been true, would have actually been important.
To be fair, his statements show the depth of the obsession that Trump had with the investigation of Biden, and his willingness to entangle US foreign policy with his political interests. That won't look good, and might even lose him a percent or two of votes. I know that when the story first broke months ago, I thought it was just Trump shooting off his mouth. As time has gone by, it has become clear that it was a lot more than that. After learning how deeply entangled his pursuit of Biden was with holding up aid to Ukraine, there's no way I would vote for that guy. Oh, wait......there was already no way I was going to vote for him.
And that's where we still are. The people who already hated Trump will have more confirmation that they were right to hate Trump, but if you think that the newest revelations will actually cause people to start pressuring their senators to remove Trump from office, you aren't living in reality.
It's possible it might hurt his poll numbers and shift some votes in November, a little.
ETA: But it's also possible that the backlash against impeachment obsession will help him in November.