metakey.php

add_action( 'graphql_init', function() {
    add_filter( 'graphql_user_fields', function( $fields ) {       
     
                $fields['userBadges'] = [
                        'type' => \WPGraphQL\Types::String(),
                        'description' => __( 'The badges of the user', 'gqlbadges' ),
                        'resolve' => function( \WP_User $user ) {
                            // $user = new WP_User($user->ID);
                            // Or...

                            $userproMeta = get_user_meta( $current_user->ID );

                            $badgeURL = $userproMeta['_userpro_badges'][0];

                            return ! empty( $userproMeta ) ? $userproMeta : null;

                          },
                ];


// UPDATE BELOW

        $fields['userBadges'] = [
                        'type' => \WPGraphQL\Types::String(),
                        'description' => __( 'The badges of the user', 'gqlbadges' ),
                        'resolve' => function( \WP_User $user ) {
                            // $user = new WP_User($user->ID);
                            // Or...

                            $userproMeta = get_user_meta( $current_user->ID, '_userpro_badges', false );

                            $badgeURL = $userproMeta['badge_url'][0];

                            return ! empty( $badgeURL ) ? $badgeURL : null;

                          },
                ];