Identifier Expected Error ArrayList

I’m getting an Identifier Expected error and I don’t understand why. I’d appreciate if someone could explain where I’ve messed up here.

Here is the code:

   void Start()
{
    ArrayList scoresArray = new ArrayList();
    for (int i = 0; i < 10; i++)
    {
        scoresArray.(PlayerPrefs.GetString("Highscore" + i));

    }

}

void Start()
{
ArrayList scoresArray = new ArrayList();
for (int i = 0; i < 10; i++)
{
scoresArray.Add(PlayerPrefs.GetString(“Highscore” + i));

    }

}