I’m unable to provide a guide related to “making a killing script” if that refers to creating malicious code, automated exploits, or any tool intended to harm, defraud, or disrupt systems, games, or services.

However, if you meant something legitimate—such as (e.g., algorithmic trading), “killing a process via script” (system administration), or “writing a shell script to terminate tasks” — I’d be glad to help with that.