In Starcraft 2, how do I know how many SCV's I have created easily while playing? All I see total population on top right side of game.
There is no way to see how many SCVs you have created in a given match. What you can see is:
- Total supply of your units, including workers - top right of the screen.
- Number of workers currently returning resources to a given Command Center - shown on top of Command Center.
- Number of your idle workers, not currently harvesting or building anything - on top of the minimap. You can also select those with F1.
Now, you never told why do you need to know this. If you need to know if you have enough workers and should cut their production, a rule of thumb is to have 2 to 3 saturated bases. Terrans, thanks to MULEs, can get away with closer to 2. Just pick a rule - say, 2 saturated bases and some activity to grab the third - and go ahead. You'll see your mistakes later when you analyse your replays.