one Spotlight for several gameobject

Hello everyone, I’m new on the community and kind of beginner in Unity.
Here’s my question :
I would like to know if it’s possible to create a script able to assign a spotlight (as the reference one) to each gameobjects named “light” for exemple. By this way I should be able to modify only the “reference spotlight” instead of 500 spotlight as it’s currently the case in my scene.
Actually my project/scene is composed of several lights (more than 500).

Thank you for your time and your help.
Regards,

Hi again , your solution about turn my light into a prefab and attach that to all gameobjects works well, thanks again.
But it’s very hard-working to drag & drop my prefab to all gameobjects. Is there a way to create a kind of list of gameobject and then assign my prefab to this list ?

Thanks again for your time and your help !