A Webhook receives data from another site or automation. Are you sending anything to the Webhook? If not you probably won’t need it.
So you basically need to “visit” the site yourself to get the content. This is called Web Scraping. At the most basic level, you can do this using a HTTP “Make a request” module.
For more information on the different methods of web scraping, see Overview of Different Web Scraping Techniques in Make 🌐
Hope this helps! If you are still having trouble, please provide more details.
— @samliew