{% set entries = craft.entries.section(‘listing’).authorId(user.id) %}

{% if entries.count >= userGroup.entryLimit %}
    No more entries for you!
{% else %}
    More entries for you!
{% endif %}

{% set entries = craft.entries.section(‘listing’).authorId(user.id) %}

{% if entries.count >= craft.myPlugin.getEntryLimitForUser(user.id) %}
    No more entries for you!
{% else %}
    More entries for you!
{% endif %}