No included FoV options in demo as of 7/25/20, but you can increase with the horizontal / vertical swap mentioned on the Unreal 4 Page.
Engine.ini
[/script/engine.localplayer] AspectRatioAxisConstraint=AspectRatio_MaintainYFOV
Topic on Talk:Destroy All Humans!
increasing FoV this way appears to not play nice with render distance. Objects you're not looking directly at will vanish. Cars, people, trees, etc.