Arrays and For loops question

Hi I'm following a tutorial online to figure out how to compile a list of high scores in a game. I understand most of this code following along but the only section that I can't wrap my head around is all the code under the FormatHighscores method. It's very confusing to me and I'm just learning how to do this.

I understand why that method is being used, but I don't understand the lines of code within it that makes it do what it does.

If anyone can give me a brief explanation if possible, that would be great. The vid doesn't explain much during that part.

Thanks!

 const string privateCode = "YaCRIoQQDkG39N9_tr3CygJgI08xYI2EylCY7MXRXoA"; 
 const string publicCode = "599be7366b2b651a6cba683"; 
 const string webURL = "http://dreamlo.com/lb/";

 public Highscore[] highscoresList;






 void Awake()
 {
     AddNewHighscore ("Sean", 10);
     AddNewHighscore ("Lucas", 8);
     AddNewHighscore ("Austin", 2); 

     DownloadHighscores ();

 }




 public void AddNewHighscore (string username, int score)
 {
     StartCoroutine (UploadNewHighscore (username, score));
 }


 IEnumerator UploadNewHighscore(string username, int score)
 {
     WWW www = new WWW (webURL + privateCode + "/add/" + WWW.EscapeURL (username) + "/" + score);

     yield return www;

     if (string.IsNullOrEmpty (www.error)) 
     {
         print ("Upload Successful!");
     }

     else
     {
         print ("Error Uploading: " + www.error);
     }
 }





 public void DownloadHighscores()
 {
     StartCoroutine ("DownloadHighscoresFromDatabase");
 }


 IEnumerator DownloadHighscoresFromDatabase()
 {
     WWW www = new WWW (webURL + publicCode + "/pipe/");

     yield return www;

     if (string.IsNullOrEmpty (www.error)) 
     {
         FormatHighscores (www.text);
     }

     else
     {
         print ("Error Downloading: " + www.error);
     }
 }
     




 void FormatHighscores(string textStream)
 {
     string[] entries = textStream.Split (new char[] { '\n' }, System.StringSplitOptions.RemoveEmptyEntries); 

     highscoresList = new Highscore[entries.Length];

     for (int i = 0; i < entries.Length; i++) 
     {
         string[] entryInfo = entries [i].Split (new char[] { '|' });

         string username = entryInfo [0];

         int score = int.Parse (entryInfo [1]);

         highscoresList[i] = new Highscore (username, score);

         print (highscoresList [i].username + ": " + highscoresList [i].score);
     }
 }

}

public struct Highscore { public string username; public int score;

 public Highscore(string _username, int _score)
 {
     username = _username;

     score = _score;

 }

}