Well Burgum brings money, once he's the officially the VP nominee he could dump as much as he wants into the campaign, right?
Yes, assuming he is ready to spend a lot of that money. It would certainly help. However, I think Trump's main focus right now is electability, not funding - if he is elected all his troubles go away (i.e. he pardons himself). That is why I think that (through gritted teeth) he will pick Haley or, at the very least, go with a woman VP candidate like Stefanik, to soften his image with suburban women voters.