This display element also called read-only element is an dynamic non-interactive element. That means you can not interact with the element to edit or send values. But it still get's updated value. This element is most like parameter element only with the difference that you can not interact with it.
The image above shows the different types of color, fonts, types, background etc. to get an overview of possible looks of the display element (readonly element). Additional colors or background colors can be configured in the element properties in the screen editor.