Control the output of a textfield using UM filter hooks

In this example, we assume that your field metakey is buttoncode. This would be the code to change / alter the display of field output on profile.

add_filter('um_profile_field_filter_hook__buttoncode', 'um_profile_field_filter_hook__buttoncode', 99, 2);
function um_profile_field_filter_hook__buttoncode( $value, $data ) {
	$value = do_shortcode( $value );
	return $value;
}