To set the number of the counter click it and then press settings. The below are explanations of what they do.

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Start from - Where the number starts

Ending Number - Where the number ends

Duration - How fast it operates the higher the number the slower it runs

Prefix - Text at start of number IE. $

Suffix - Text after number IE %

Start on Viewport enter - Will start the counter when the counter enters the view point

Comma Separator - adds a comma to the number

Increment - Increases number by the increment entered

Reset on click - Starts the counter again when clicked