With Add to Woo Wishlist widget, you can easily let users add WooCommerce Products to their wishlist.
You can use this wishlist button on your single product (WooCommerce) template.
Title: Customize the call to action text for add to wishlist.
Icon: Set the icon for the button.
Button: Settings to adjust button size, type and icon size, spacing & position.
To show the products that are added to the wishlist, you can use Woo Wishlist widget.