Check out example codes for "unity variable from another script". It will help you in understanding the concepts better.

Code Example 1

//Make Health public
public class PlayerScript: MonoBehaviour {
  public float Health = 100.0f;
}

//Access it.

public class Accessor : MonoBehaviour {
    void Start()
    {
        GameObject thePlayer = GameObject.Find("ThePlayer");
        PlayerScript playerScript = thePlayer.GetComponent<PlayerScript>();
        playerScript.Health -= 10.0f;
    }
}

Code Example 2

public class Script1 : MonoBehavior
{
public static int Script1Int;
}
//Another script:

public class Script2 : MonoBehavior
{
public static int Script2Int;

	void Start()
	{
    	Script2Int = Script1.Script1Int;
    }
}

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