Let's pretend I'm really dumb for a moment and someone explain what this means exactly?
No real effect in practice. But what happens is that when you have a voiced vote like this, if the "ayes" have it, then it passes as if unanimous. So now basically, 100:0 the push to re-open the government has passed the House.
Obviously this doesn't mean anything without further Senate ratification but it does once again force McConnell to openly oppose opening the government which plays right into AOC/Pelosi's tactics of getting him out in the open to have to continue weathering the push-back.