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.
Widget Configurations
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.