Scan it and check the source code. It is completely safe... ...although it is 100% dogshit. It seems OP just asked ChatGPT to write a script, but looking at the source code you know it will not work. It will just spam the logger with "Running Falador course..."  

I don't understand posts like this. How do I know this is safe posted by a random user with zero post count? 

6/14 Sub Quester - Advanced Script Creator: @SubCZ Reason for Refund: I only had 6 remaining quests that sub quester claimed to be able to complete. When I start the script the script settings menu pops up off screen and there is no way to move it on screen. It is loading on to a monitor that does not exist. Tried multiple PCs. Win-shift-arrow and other hotkeys do not work. Used proper game window size etc. All other scripts work (Guester, P2P AI etc.) Proof of Issues (required: screenshots, videos, and/or DreamBot logs): 

Edited: thought this was about Guester. Will re-review this in a bit. If you're having issues open up a ticket.

well, just close my account then because i have a family situation and will not be home for longer then expected, so i will not be able to provide you with proof sadly. I thought the customer service was better since i've also already mentioned it and asked help in the discord, but got no fix. Thanks anyway @Hashtag