Please help me with my script!

Unity Engine
1 
using UnityEngine;
using UnityEngine.SceneManagement;

public class Menu : MonoBehaviour {

    public void StartGame ()
    {
        SceneManager.LoadScene(SceneManager.GetActiveScene().buildIndex + 1)
    }
}

icant figure out what i need to do!
Error:
Assets\Scripts\Menu.cs(8,77): error CS1002: ; expected

2

Clearly. How to report your problem productively in the Unity3D forums:

http://plbm.com/?p=220

How to understand compiler and other errors and even fix them yourself:

https://discussions.unity.com/t/824586/8

It looks like you are missing a semicolon.

Also, consider this:
https://www.youtube.com/watch?v=84kaypWK1bM

3

i know that i am missing a semicolon, but i dont know where i am missing it.

4

You should read my link above telling you how to interpret the error message. It is telling you the precise character where you need to add it!!!