function getScore(){
  var answers = ["A", "A", "A", "A", "A"] // poprawne odpowiedzi pytania 1-5

  var correctAnswers = 0;
  for(var i = 0; i < answers.length; i++){
      var a = document.querySelectorAll("input[name=radio"+(i+1)+"]:checked").value;
      if(a == answers[i]){
        correctAnswers++;
      }
  }

  document.getElementById("result").innerHTML = correctAnswers;
}