It's been a while since I've written any C++ but I know you can loop in a manner similar to this:
Code:
#include<conio>
#include<iostream>
#include<iomanip>
#include<fstream>
#include<dos>
using namespace std;

int main()
{
   int score;
   char user_name[25];
   char user_score[3];
   ifstream infile;


   infile.open("NAME_QUIZ.DAT", ios::in);

   while(infile)
   {
      infile.get(user_name,25);
      infile.ignore(80,'\n');
      infile.get(user_score, 3);
      infile.ignore(80, '\n');
      score = atoi(user_score);
   
      cout << user_name << endl;
      cout << user_score << endl;
      getch();
   
   }
   infile.close();
   
   return 0;
}