WordPress WooCommerce Payment Setup

DO NOT TRY TO CONTACT ME OUTSIDE OF UPWORK! Those who will - will be banned and disqualified from the pool of applicants immediately! Need help setting up payment options for a peptide shop on an existing WordPress / Woocommerce site. The work includes configuring payment gateway between two woocommerce shops (peptide and another product) and pass order data between two like it is done on this website: https://purepeptide.co/ Previous work on similar projects or peptide shops is a big plus