I had a good lighting setup, however when I built it the dark turned black. Can I reverse the build? How do I switch to dynamic lighting only and it stay?
In the world settings, tick ‘force no precomputed lighting’, and rebuild once more…
Nope, didnt work. Still black.
Sorry, also change all your lights to moveable 
Well my terrain is all fine, but my static meshes are all super dark. I mean its supposed to be dark but not black.
I only have one lightsource but it was working fine before I built the lighting
Are the lights moveable?
Yes
If you haven’t saved the level, you can just re-open it?
I have, how do I get light bounces?
You should get light bounces automatically.
Is the sole light a directional light?
They arent effecting my static meshes
yes
Why was it working in the editor? Or is me building it like that never gonna be a thing.
Are you on a Mac, by any chance?
Pc
Did you make these meshes? What happens if you drop a big cube in there?
The destroyed buildings are all static meshes. Ill try a cube.
Still the same, lit on top black everywhere else.