Where does the dynamic value for the API come from?

In the attached file, it shows a dynamic value called “query_term”, which I would like to come from the user’s input. However, I don’t know how to bind this dynamic value to a user input. Can somebody please tell me how? In which part of Bubble’s editor would I be able to do this?

Uncheck the private for the query_term.

So this param can available when you calling the api as data/action.