Connecting two objects from different scenes in Unity

Question

So i have 2 different scenes. One is the MainScene with MainMenu Panel, LevelSelection Panel, Settings Panel and Shop Panel. Other is the Level1 Scene. So on the Level1 scene i have a progress bar and coin reward for each finished level. On MainScene, LevelSelection Panel there is also a progress bar for each level and a global coin counter. How can i connect progress bars and coin systems from two scenes, so that when Level1 is finished, 5 coins are added on the LevelSelection Panel and progress bar also "progresses" for 1? Here is my script for the progress bar, i haven't made the coin one yet, but i have an idea for that too:

PROGRESS BAR:

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

public class ProgressBar : MonoBehaviour
{
    [SerializeField]
    private Image stars;

    [SerializeField]
    private Image stars_full;

    
    private int level = 0;

    private float currentAmount = 0;

    private Coroutine routine;

    private void Awake()
    {
        DontDestroyOnLoad(gameObject);
    }
    public void OnEnable()
    {
        level = 0;
        currentAmount = 0;
        stars_full.fillAmount = currentAmount;
        UpdateLevel(level);
    }

    public void UpdateProgress(float amount, float duration = 0.1f)
    {
        if (routine != null)
            StopCoroutine(routine);

        float target = currentAmount + amount;
        routine = StartCoroutine(FillRoutine(target, duration));
    }

    public IEnumerator FillRoutine(float target, float duration)
    {
        float time = 0;
        float tempAmount = currentAmount;
        float diff = target - tempAmount;
        currentAmount = target;

        while (time < duration)
        {
            time += Time.deltaTime;
            float percent = time / duration;
            stars_full.fillAmount = tempAmount + diff * percent;
            yield return null;
        }

        if (currentAmount >= 1)
            LevelUp();

    }

    public void LevelUp()
    {
        UpdateLevel(level + 1);
        UpdateProgress(-1f, 0.2f);
    }

    public void UpdateLevel(int level)
    {
        this.level = level;    
    }
}

And in my Level1 Control script i just call the UpdateProgress() method and it works. Also can i somehow stop the progress bar reseting when Level2 is loaded with DontDestroyOnLoad()?