Javascript - Why won't my incorrect answer counter increment like my correct answer counter does?

I'm trying to increment an incorrect answer counter, for some reason this isn't working. The correct answer counter is working fine so I've tried a similar process in making it a function but no luck. I've tried adding it as separate if statement and also inside the if (selectedAnswer == currentQuestion.answer) statement.

You can ignore the qualifying points because that is part of another counter, I just also want a counter that increments correct and incorrect answers. The correctScore () function works fine, so why doesn't the incorrect one when I place it after correctScore ();? Hope that makes sense.

let classToApply = 'incorrect-answer';
if (selectedAnswer == currentQuestion.answer) {
  qualifyingPointsScore();
  correctScore();
  classToApply = 'correct-answer';

  /*selectedChoice.parentElement.classList.add(classToApply);*/
}

function correctScore() {
  correctAnswers += 1;
  document.getElementById("correct-score").innerText = correctAnswers;
}

function incorrectScore() {
  incorrectAnswers += 1;
  document.getElementById("incorrect-score").innerText = incorrectAnswers;
}

</div>
<div class="scores-container">
  <div class="scores-area">
    <p class="scores">Correct Answers: <span id="correct-score">0</span></p>
    <p class="scores">Incorrect Answers: <span id="incorrect-score">0</span></p>
    <p class="scores">Total Questions <span id="question-counter">0</span></p>
  </div>
</div>

Cheers in advance.