Scriptum/Assets/Scripts/RespawnScript.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class RespawnScript : MonoBehaviour
{
    private string currentScene;

    public GameObject mainCh;

    public void RespawnOnCurrentScene()
    {
        Scene scene = SceneManager.GetActiveScene();
        currentScene = scene.name;
        SceneManager.LoadScene(currentScene);
        Player player = mainCh.GetComponent<Player>();
        player.currentHealth = 10.0f;

    }
}