Ummmmm ... last I heard, it's Miss Nancy who's refusing to meet with Trump, not the reverse. And I suspect Trump's reaction to the prospect of Pelosi holding hearings and scheduling a vote on impeachment is "Bring it!
Besides knowing the Senate won't vote him out of office (something I doubt mal understands), he knows it could be made a PR disaster for the Ds - and he's shown he has the skills to do that - as well as providing lots of campaign ad footage for R House candidates and his own run for reelection.