Getting image data through custom taxonomy

How do you access image meta data using the custom taxonomy system? I am currently using

get_terms( 'wpmf-gallery-category, [ 'hide_empty', => 0 ]);

to pull in a gallery. I would like access to the image data ( title, captions, url, ect). How can I do that with your taxonomy?

$args     = array(

            'post_status'    => 'any',

            'post_type'      => array('attachment'),

            'tax_query'      => array(

                array(

                    'taxonomy'         => 'wpmf-gallery-category',

                    'terms'            => $gallery_id,

                    'include_children' => false

                )

            )

        );

        $query    = new WP_Query($args);

        $attachments= $query->get_posts();