That will leave a nasty mark! The question is if that’s repairable. Did the main gear blow out to cause the nose gear to smash onto the runway? I see single runway operations when EWR reopens.
It's repairable, even if they need to cut off the nose and graft on a new one. More extreme things have been done. But the question is whether it's worth it on a 22yo airframe.
With all the shortage of planes caused by the 737 Max groundings, UA will probably want to return this 757 to service.
That's going to figure into it, yes, but can she be repaired in a short enough timeframe to mitigate that loss of lift? There are also a bunch of 757s in storage that could be pressed into service. At least UA owns this bird, so the decision is all theirs.