Checking fuel pressure
 

Is it best to check the fuel pressure when the engine
It cold or warmed up. Dropped by wally wourld on the way home
And picked up a tire pressure gauge and when I got home tested
the pressure, first try it was way over a hundred the next time I
Hit port real quick and was seventy. Just wanted to make sure I'm
Doing out right.

You are doing it right, But make sure you get the pressure gauge on there square... And just test at idle. Warm or cold wont matter.