Add Noindex & Nofollow Attributes to all the Posts

add_filter( 'aioseo_robots_meta', 'aioseo_filter_robots_meta' );

function aioseo_filter_robots_meta( $attributes ) {

   if ( is_singular() ) {

      $attributes['noindex']  = 'noindex';

      $attributes['nofollow'] = 'nofollow';

   }

   return $attributes;

}