I made a trivia game and I have to make a method (SuccessOrFail) that will return whether the user beat the trivia or not.

namespace D4
{
/// <summary>
/// Displays the trivia and returns whether the user succeeded or not, number of questions asked, and a free piece of trivia.
/// </summary>
public partial class TriviaForm : Form
{
    private Trivia trivia;
    private Question question;
    private Random rand = new Random();
    private HashSet<int> pickedQuestion = new HashSet<int>();
    private string usersAnswer;
    private int numCorrectAnswers;
    private int numIncorrectAnswers;

    public TriviaForm()
    {
        InitializeComponent();

        this.trivia = new Trivia();

        QuestionRandomizer();
        QuestionOutputter();
    }

    /// <summary>
    /// This method will return true if succeeded or false if not.
    /// </summary>
    /// <returns>Whether the user got the trivia right or not</returns>
    public bool SuccessOrFail(bool wumpus)
    {
        bool successOrFail = false;

        int maxQuestions = 3;
        if (wumpus == true)
            maxQuestions = 5;
        int numNeededCorrect = maxQuestions / 2 + 1;

        if (this.usersAnswer == question.CorrectAnswer.ToString())
            numCorrectAnswers++;
        else
            numIncorrectAnswers++;

        if (numCorrectAnswers + numIncorrectAnswers == maxQuestions)
        {
            if (numCorrectAnswers == numNeededCorrect)
                successOrFail = true;
            else
                successOrFail = false;
            numCorrectAnswers = 0;
            numIncorrectAnswers = 0;

            return successOrFail;
        }
        else
            return false;
    }

    /// <summary>
    /// This method will output a free answer to the player. 
    /// </summary>
    public string FreeTrivia()
    {
        return question.Freetrivia;
    }

    // This method tells the player whether they were correct or not.
    private void CorrectOrNot()
    {
        if (this.usersAnswer == question.CorrectAnswer.ToString())
            MessageBox.Show("Correct");
        else
            MessageBox.Show("Incorrect");
    }

    // Displays the questions and answers on the form.
    private void QuestionOutputter()
    {
        this.txtQuestion.Text = question.QuestionText;
        this.txtBox0.Text = question.Answers[0];
        this.txtBox1.Text = question.Answers[1];
        this.txtBox2.Text = question.Answers[2];
        this.txtBox3.Text = question.Answers[3];
    }

    // Clears the TextBoxes and displays a new random question.
    private void btnNext_Click(object sender, EventArgs e)
    {
        this.usersAnswer = txtAnswer.Text;

        CorrectOrNot();
        this.txtQuestion.Clear();
        this.txtBox0.Clear();
        this.txtBox1.Clear();
        this.txtBox2.Clear();
        this.txtBox3.Clear();
        this.txtAnswer.Clear();
        this.txtAnswer.Focus();

        QuestionRandomizer();
        QuestionOutputter();

        this.txtsuc.Text = SuccessOrFail(false).ToString();
    }

    // Choose a random number and assign the corresponding data to question, refreshes the list if all questions used.
    private void QuestionRandomizer()
    {
        if (pickedQuestion.Count < trivia.AllQuestions.Count)
        {
            int random;
            do
            {
                random = rand.Next(trivia.AllQuestions.Count);
            } while (pickedQuestion.Contains(random));

            pickedQuestion.Add(random);

            this.question = trivia.AllQuestions.ToArray()[random];
            if (pickedQuestion.Count == trivia.AllQuestions.ToArray().Length)
                pickedQuestion.Clear();
        }
    }
}

}

My question is how to make it so that the code asks the user 3 or 5 questions and then returns whether the user won or not?

I was wondering if somehow I could make a public void that would just make the form pop up and ask the user 3 to 5 questions and then once it asks the maximum number of questions, to close and then have a method that returns true if the user won, or false if they didn't. But I literally have no idea how to do that.

Edit: So I know a for loop can make code run more than once. But the problem I'm having is, is that I don't know how to make it so that the trivia game asks 3 to 5 questions BEFORE returning something.