Really screwed up, I think.

[Nickjetski]

Could you please give me your advice on this, please. I dropped the head on the concrete today it mushed on the one corner. You can see in the pics. Is it ruined?

 

[Greg Moore]

Carefully file it flat. It's just the valve cover gasket surface but that gasket is somewhat hard and will leak easily. No engine issues I see there, just a potential spot for oil to be blown out at high speed..

 

[Nickjetski]

Thanks so much for your reply. I will give a try. Thanks again.

 

[ski-d00]

Not a big deal but that surface is fairly polished so you should stone it to a polished flat surface.

 

[Arkie Bob]

I'd first take a small ball-peen hammer and "Peen" it back down into place. this is nearly a lost art, but malleable metals can be reformed cold with gentle persuasion. Use a small peen and light blows and you can reshape most of it before a final file/polish.