How to Improve Quality

What are you render settings under Settings->Engine Scalability Settings? I think by default resolution scale is set to 75%, which could be causing your issue.

Problem:
My world looks grainy, or perhaps even blurry. I have tried to build the lighting a few times (current pictures have light not built yet.)
I believe I have the highest graphical settings on (lit, high settings, etc) but still does not look hd, or even close to it. This happens in both editor and standalone. I dont know if its my lighting placement, or some setting I may have off( or on).
Any assistance would be highly appreciated

Note: I have both Directional and Skylight
I have also tried to look for other answers on here, but most are different, and/or are not the problem

for some reason I couldnt upload them all at once, so here are some other pics

While I did have my settings to 75, i changed it to epic (100%), as well build the world/lighting…there is little to no effect in the world itself, maybe the water looks slightly less pixel-led. the grass and tress are still the same