Maps plugin not rendering
The field is returning a Map object, you then need to call what you want from there. The relevant documentation parts are:
Embedded map - https://docs.ethercreative.co.uk/maps/rendering/embed/#from-a-map-field
Static map - https://docs.ethercreative.co.uk/maps/rendering/static/#from-a-map-field
Based on your code and dump:
{# Fetch the Map object #}
{% set myMapField = craft.entries()
    .section(&quot;home&quot;)
    .one()
    .mapGoogle %}

{# The below should render Milky Way based on your dump #}
{{ myMapField.galaxy }}