index.js

class Result {
  constructor(answers) {
    this.answers = answers;
  }

  score() {
    let result = 0;

    this.answers.forEach((answer) => {
      question = answer.question;
      result += question.score(answer.text);
    });
  }
}

class Answer {
  constructor(question, result, text) {
    this.question = question;
    this.result = result;
    this.text = text;
  }

  get question() {
    return this.question;
  }

  get result() {
    return this.result;
  }

  get text() {
    return this.text;
  }
}

class Question {
  constructor(answers, correctText) {
    this.answers = answers;
    this.correctText = correctText;
  }

  score(text) {
    const isCorrect = text === this.correctText;

    return isCorrect ? 10 : 0;
  }
}

result = new Result([]);
restul.score();