Pass QuerySet of your hierarchical categories to the template and then use the {% recursetree %} template tag as follows:

1. Create a view that loads all the categories and passes them to a template:

# movies/views.py
# ...other imports...
from django.shortcuts import render

from .models import Category

# ...

class MovieCategoryListView(View):
    template_name = "movies/movie_category_list.html"

    def get(self, request, *args, **kwargs):
        context = {
            "categories": Category.objects.all(),
        }
        return render(request, self.template_name, context)

2. Create a template with the following content to output the hierarchy of categories:

{# templates/movies/category_list.html #}
{% extends "base.html" %}
{% load mptt_tags %}

{% block content %}
    <ul class="root">
        {% recursetree categories %}
            <li>
                {{ node.title }}
                {% if not node.is_leaf_node %}
                    <ul class="children">
                        {{ children }}
                    </ul>
                {% endif %}
            </li>
        {% endrecursetree %}
    </ul>
{% endblock %}

3. Create a URL rule to show the view:

# movies/urls.py
# ...other imports...
from django.urls import path

from .views import MovieCategoryListView


urlpatterns = [
    # ...
    path('category/', MovieCategoryListView.as_view(),
         name='category_list')
]