i need help plz .... Quickly

how can i count how many numbers enterd by the user so the output would be like this

Total number of Scores = ....

this is my code :-

import java.util.Scanner; public class SCORES { public static void main (String [] args) {

    double sum; 
    double avarege;
    int numberOfScores ; // number of scores entered by the user ..
    int Scores;//scores entered by the user..




    Scanner keyboard = new Scanner (System.in);
    System.out.println("Pleas Enter a scores between 0 , 100 ..");
    System.out.println("Whene you finish, enter negative number  ..");// Dont forget to declare the negative number !!!!!!!!

    Scores = keyboard.nextInt();

    System.out.println("Now , I'll get the  total  Scores you've entered..");




}

}