woocommerce-elearncommerce-bulk-setting.php

<?php

add_action( "init", function() {
  if( get_option( "_temp_did_run_123456", false ) !== false )
    return;

  $product_id = 1;

  $post_types = array_keys( wpep_content_type()->contentTypes );

  foreach( $post_types as $post_type ) {
    $post_list = wpep_get_post_list_assoc( $post_type );

    foreach( $post_list as $post_id => $post_title ) {
      update_post_meta( $post_id, 'wpep_woocommerce_required_product_ids', $product_id );
    }
  }

  update_option( "_temp_did_run_123456", time() );
});