LJ Dynamic Fields unable to output title
The values in your tagsMultiSelect are the tag ids, not the tags.
So, what you need to do in your template is convert that id to a tag:

{% for tagId in entry.tagsMultiSelect %}
  {# get the tag with that id #}
  {% set tag = craft.tags.id(tagId).first %}

  &lt;a href=""&gt;{{ tag.title ?? 'no such tag' }}&lt;/a&gt;
  {% if not loop.last %}, {% endif %}
{% endfor %}




If what you want is a predefined set of tags, you might also consider changing that tag group into a category - that would let you use a regular category field for your tagsMultiSelect.