Hello @orgasign,
I think you want to translate the site into multiple languages and set it up for multiple currencies as well. So you have to use the WPML plugin for multiple languages and the WooCommerce Currency Switcher plugin for the currency switcher.
Please read the details here:
https://www.portotheme.com/wordpress/porto/documentation/multilingual-management-with-wpml-and-porto/
https://www.portotheme.com/wordpress/porto/documentation/faq/how-to-setup-language-switcher-and-currency-switcher/
Best Regards,
PThemes Team.