I dont wanna see my fullscreen effect in my scene, how can I achieve that.
You could disable/enable the renderer feature from a script.
A renderer feature is a scriptableobject, an asset, that exists as a sub-asset of the renderer-asset. You can create a serialized field on a script and assign your renderer feature in the editor. Then you can disable/enable it by SetActive() like you would do with any other gameObject.