Someone may have one, or have released one, but if you don't specify version no one can help.
The different versions of the game have different scripting languages.
The old versions 0.14-0.45/0.59 support .sqf, and .sqs. "Arma2 scripts can be ported"
Beta-1.0+ have .c and changes to the script language.
Without version no one knows what game you need script for.