I can offer you to break a complex task into several simple ones and solve them consistently. You have a base in AirTable. First try to get the data of any text column from it in the ListViewer. If this happens, then after that, when you click on the list option, it will go to the next screen and display the text of the selected option in the Label. If this happens, then solve the following problem.
See examples of working with AirTable and List Viewer in the project.
https://x.thunkable.com/projects/5cc9570f7e2a78259a8c0a78/project/properties/designer/