Hi,

You should paste this code into the function.php of the child theme or via the CodeSnippet plugin here: https://wordpress.org/plugins/code-snippets/

add_filter( 'theme_mod_penci_top_bar_show', function( $value ) {
    if ( is_page() ) {
        return false;
    }
    return $value;
} );

Regards,
PenciDesign.