Woo Private Product can make your products private to specific users who have an account in your Woocommerce Store. Other users won’t be able to see the product anywhere in your site neither buy them.
Just install the plugin by the “Plugins” menu > Add New. There is no need for configuration.
Where can i select the users who have access to a product?
R: On the product edit screen, you will see a custom section under the “price” field, there you can select multiple users.