Make a public slot to load the scene dragged in there?

Ok so I have this OnTrigger script that loads whatever scene it says in the code. What I want it to do is for me to be able to make it public or something so that I can drag a scene from my project into a slot in the inspector and it loads that scene. Here is the script.

 public void TutorialPicker()
 {
     SceneManager.LoadScene("PathScene");
 }

 void OnTriggerEnter(Collider other)
 {
     if (other.gameObject.CompareTag("Player"))
     {
         SceneManager.LoadScene("PathScene");
     }
 }

As you can see, to load a new scene, I have to make an entirely new script and change the code (it's too time consuming). It's a simple little script that I made, but I do need help with it. What I mean by what I said above is being able to drag a scene into a slot of this script in the inspector, and then that scene being loaded when it something triggers the gameobject. I will be as clear as I possibly can.