pass product custom field to order custom field

Why does it need to be an order custom field? Would make more sense to add the product meta as order item meta.

Products don’t have a 1to1 relationship with orders, tis 1 to many. Even though you only have one product.

https://stackoverflow.com/questions/30004597/add-custom-order-item-meta-data

https://wisdmlabs.com/blog/add-custom-data-woocommerce-order/

Hello hanks for reply. I am not usre if this could help me.

each product has custom field Term (value is different for each product) and need to have this custom field term in orders with this product