You're missing an important part of your question, the what and when. Computer Use is way to broad for anyone to answer because the answer is different depending on what you meant.
Do you mean how many computers can you install LabVIEW on? Or How many computers can talk to the cRIO at once? Or how many computers can there be on the drivers station during a match?
If you make your question more specific, someone should be able to answer it.
