Im using the latest Blender version and if I wanna configure my shadow options it doesnt show where its supposed to be as you can see in the picture. I remember thats its been working in the past so Im pretty sure I just did something to hide it but I cant figure out what it is. Id appreciate help a lot!
If you click on Light (in the Object Data Properties), you can then uncheck the Cast Shadow box. Alternatively you could select an individual object, go to Object properties, click on Visibility and uncheck the Shadow box. All this applies to Cycles, found in Render Properties > Render Engine.
If you set the Render Engine to EEVEE in the Render Properties, then you can click on Shadows a bit below it. Also then there is a Shadow section in the Object Data Properties if you select a light.
All these settings can be found in the Properties window.
EDIT: (as promised in comments)