Highscore - BestTime

Hello together!

First of all, i am not a programmer so this code might look a bit funny. Basically what i’m trying to do is a best Time board. I have set up a text UI and attached this C# script to it.
I wish to have a code where the best Time of the Player always overwrites his last worser time. If possible: i would also like to delete the saved time’s with a simple keydown. So that the Player always can restart his time if he wants to.

I am really frustrated because i didn’t find any other documentations on how to do a simple and proper highscore board. So i hope that somebody here could help me :).
I am also open for new or other ideas.

Thank’s for the effort!

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

public class erste : MonoBehaviour {

	public float zeit;  
	public float zwischenzeit= 19.0f;  // by default

	private string topname;  

	public Text TotalEins;  // UI Text

	// Use this for initialization
	void Start () {

		zeit = PlayerPrefs.GetFloat ("Time");  // get saved Time

		zwischenzeit = zeit;

		ErstePlatz ();

	void ErstePlatz () {


		for (zwischenzeit = PlayerPrefs.GetFloat("erster"); zwischenzeit > zeit; zwischenzeit--) {

				 PlayerPrefs.SetFloat ("erster", zwischenzeit);

				topname = PlayerPrefs.GetString ("Name").ToString ();

				TotalEins.text = "Name: " + topname + " " + "Time: " + zwischenzeit.ToString ();



I found a solution. AssetStore —> SumScore