Version: 2017.1
public static float GetFloat (string key, float defaultValue= 0.0F);

Description

Returns the value corresponding to key in the preference file if it exists.

If it doesn't exist, it will return defaultValue.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Example() { print(PlayerPrefs.GetFloat("Player Score")); } }