SceneManager.GetActiveScene

Returns

Scene The active Scene.

Description

Gets the currently active Scene.

The currently active Scene is the Scene which will be used as the target for new GameObjects instantiated by scripts. Note the active Scene has no impact on what Scenes are rendered. See Also: Scene.

using UnityEngine;
using UnityEngine.SceneManagement;

public class GetActiveSceneExample : MonoBehaviour
{
    void Start()
    {
        Scene scene = SceneManager.GetActiveScene();
        Debug.Log("Active Scene is '" + scene.name + "'.");
    }
}