Saving highscore for multiple scenes

Questions & Answers
1

hi im new to unity, ive made a highscore script and it saves with playerprefs perfectly, only problem is that my game has more than one scene and the highscore for one scene is the same for the others, can someone help me in fixing this? im quite new and this is my only problem thats preventing me from finishing my game! thank u in advance

using System.Collections;
using UnityEngine;
using UnityEngine.UI;

public class ScoreManager : MonoBehaviour
{
    public Text scoreText;
    public Text hiScoreText;


    public float scoreCount;
    public float hiScoreCount;

    public float pointsPerSecond;

    public bool scoreIncreasing;

    // Use this for initialization
    void Start()
    {
        if (PlayerPrefs.GetFloat("HighScore") != 0) 
        {
            hiScoreCount = PlayerPrefs.GetFloat("HighScore");
        }
    }

    // Update is called once per frame
    void Update()
    {
        if (scoreIncreasing)
        {
            scoreCount += pointsPerSecond * Time.deltaTime;
        }

        if (scoreCount > hiScoreCount)
        {
            hiScoreCount = scoreCount;
            PlayerPrefs.SetFloat("HighScore", hiScoreCount);
            PlayerPrefs.Save();
        }

        scoreText.text = "Score: " + Mathf.Round(scoreCount);
        hiScoreText.text = "High Score: " + Mathf.Round(hiScoreCount);
    }
}
2

im trying to figure this out myself but i think u somehow have to save the variables on a unused scene then call the variables from that scene. i hope we can help each other with our ideas