Clickable date in full calendar

I am a beginner I downloaded full calendar 5.10.1 from fullcalendar.io. Here’s what I want to do. If I click on any date, it will go to my registration.html.

Here is calendar script:

document.addEventListener(‘DOMContentLoaded’, function() {
var calendarEl = document.getElementById(‘calendar’);
var calendar = new FullCalendar.Calendar(calendarEl, {
initialView: ‘dayGridMonth’
});
calendar.render();
});

Here is registration form:

    <fieldset>
      <legend>For person</legend>
      <label>
        Name
        <input type="text" name="name" required>
      </label>
      <div class="two-cols">
        <label>
          Email address
          <input type="email" name="email" required>
        </label>
        <label>
          Phone number
          <input type="tel" name="phone">
        </label>
      </div>
    </fieldset>

    <fieldset>
      <legend>Appointment request</legend>
      <div class="two-cols">
        <label>
          Datum
          <input type="date" name="Appointment request" required>
        </label>
        <div class="inline">
          <label>
            <input type="hidden" name="Morning desired" value="no">
            <input type="checkbox" name="Morning desired" value="yes">
            Morning
          </label>
          <label>
            <input type="hidden" name="Afternoon desired" value="no">
            <input type="checkbox" name="Afternoon desired" value="yes">
            Afternoon
          </label>
        </div>
      </div>
      <p>Confirmation requested by</p>
      <div class="inline">
        <label>
          <input type="radio" name="Confirmation requested by" value="email" checked>
          Email
        </label>
        <label>
          <input type="radio" name="Confirmation requested by" value="phone">
          Phone call
        </label>
      </div>
    </fieldset>
    
    <div class="btns">
      <input type="text" name="_gotcha" value="" style="display:none;">
      <input type="submit" value="Submit request">
    </div>

  </form>