Yes, it's unlikely they'll announce a winner on election night unless it's a landslide one way or the other and even if it's a Biden landslide that likely won't show until most of the postals are in, although Fox OANN etc might try and call the election for Trump if he's ahead even if the outstanding postal votes don't support that call etc
Re Nevada idk but the state is a few points bluer than the tipping point now, so if Trump is winning Nevada he's almost certainly been reelected
Jon Ralston on twitter is your guy to follow on twitter for Nevada polling/political news etc if you're looking at props specific to Nevada
https://twitter.com/RalstonReports