GameObject.scene

public SceneManagement.Scene scene ;

Description

Scene that the GameObject is part of.

//Output the name of the Scene this GameObject belongs to

using UnityEngine;
using UnityEngine.SceneManagement;

public class Example : MonoBehaviour
{
    void Start()
    {
        Scene scene = gameObject.scene;
        Debug.Log(gameObject.name + " is from the Scene: " + scene.name);
    }
}