How to use the Broadlink script in regard to transferring data from the E-controll app

Hi, i’m a newbie to code, and the use of Home assistant. in the broadlink component there’s a guide to transfering remote data from the E-Controll app to home assistant, but i’m affraid i do not understand it:
https://home-assistant.io/components/switch.broadlink/

i can’t get step 5-11 to work. Nothing happens when I doubble click on the script nothing happens, and I don’t know where to run the commands that are described in the following steps.