It usually means time a number.

For example you can say Clap X 4 meaning clap 4 times. Hope I helped.

It can mean any of those things.

Go x Go Big Red x x x

Something like this ^ could be pauses, could be clapping ON the pauses, or could be clapping on the words with no pauses.
You don't have to do a cheer the way that someone else intended. See what you like best and make it your own :-)

It usually means to clap, because normally it will say pause if they want you to.