using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

         IDictionary<string, object> userDict = new Dictionary<string, object>();

        IDictionary<string, object> user1 = new Dictionary<string, object>();

        IDictionary<string, object> user2 = new Dictionary<string, object>();

        const string scoreKey = "score";

        const string nameKey = "name";

        user1.Add(nameKey, "John");

        user1.Add(scoreKey, 5);

        user2.Add(nameKey, "Pete");

        user2.Add(scoreKey, 10);

        userDict.Add("<userid1>", user1);

        userDict.Add("<userid2>", user2);

        var highscores = userDict

            .OrderByDescending(u => ((IDictionary<string, object>)u.Value)[scoreKey])

            .Select(u => new {

                    Name = ((IDictionary<string, object>)u.Value)[nameKey], 

                    Score = ((IDictionary<string, object>)u.Value)[scoreKey]

                }

             );

        foreach(var score in highscores) {

            Console.WriteLine("Name: " + score.Name + " , Score: " + score.Score);

        }

    }

}