Unity C# Simple Score System

C# script to make simple score system with load and save options.

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

// ? 2017 TheFlyingKeyboard and released under MIT License
// theflyingkeyboard.net

public class SimpleScore : MonoBehaviour {
    [SerializeField] private float minScore = 0.0f;
    [SerializeField] private float score = 0.0f;

    [SerializeField] private bool loadScore = false;
    [SerializeField] private bool saveScore = false;
    [SerializeField] private bool resetSavedScore = false;
    [SerializeField] private string playerPrefsName = "Score";
   
    [SerializeField] string initialScoreText;
    [SerializeField] bool useTextText = false;
    [SerializeField] Text scoreText;

    // Use this for initialization
    void Start () {
        GetScoreText();

        if (loadScore)
        {
            SaveIfNotExisting();
            LoadScore();
        }

        if (resetSavedScore)
        {
            Reset();
        }

        UpdateText();
    }

    void UpdateText()
    {
        scoreText.text = initialScoreText + score.ToString("N0");
    }

    void SaveIfNotExisting()
    {
        if (!PlayerPrefs.HasKey(playerPrefsName))
        {
            PlayerPrefs.SetFloat(playerPrefsName, score);
        }
    }

    void LoadScore()
    {
        score = PlayerPrefs.GetFloat(playerPrefsName);
    }

    void SaveScore()
    {
        if (saveScore)
        {
            PlayerPrefs.SetFloat(playerPrefsName, score);
        }     
    }

    void GetScoreText()
    {
        if (useTextText)
        {
            initialScoreText = scoreText.text;
        }
    }

    //Call that function where you want to increase your score
    public void AddScore(float value)
    {
        score += value;
        UpdateText();

        SaveScore();
    }

    //Call that function where you want to decrease your score
    public void LoseScore(float value)
    {
        score -= value;
        UpdateText();

        SaveScore();
    }

    public void Reset()
    {
        score = minScore;
        UpdateText();

        SaveScore();
    }
}