The Light Explorer window allows you to select and edit light sources. To open the Light Explorer window from the menu, navigate to Window > Rendering > Light Explorer.

Use the five tabs at the top of the panel to view settings for the lights, 2D lights, Reflection Probes, light probes, and static emissive materials in the current Scene. The editable parameters are the most commonly-used fields for each component type.

Use the search field to filter each table for names. You can also select the lights you want to work on, then tick the Isolate Selection checkbox. Only the lights that were selected when the checkbox was ticked remain listed in the Light Explorer window, even if you select a different light in the scene.