Here is a code snippet to set GeoDirectory Business hours to ‘yes’ in the add listing form by default

add_action( 'geodir_after_add_listing_form', 'gdsnippet_08ghhbub_maybe_toggle_business_hour');
function gdsnippet_08ghhbub_maybe_toggle_business_hour() {
    global $gd_post;

    if (
        ! empty( $gd_post ) && ! empty( $gd_post->post_status ) && $gd_post->post_status == 'auto-draft'
    ) {
        ?>
        <script>
            window.addEventListener('load', () => {
                if ( typeof jQuery !== 'function' ) return;
                jQuery('#business_hours_row .fwrap-business_hours_f_active-1 #business_hours_f_active0').trigger('click');
            });
        </script>
        <?php
    }
}