The tab labels on the single product view are 'Description', 'Additional Information' and 'Reviews' by default. You can rename the 'Additional Information' tab with this code.
/**
* Rename additional information tab label on single product
*/
// Renames the additional information tab label on the single product page to an alternative text.
// https://www.businessbloomer.com/woocommerce-edit-product-tabs-labels/
add_filter( 'woocommerce_product_additional_information_tab_title', 'sc_woo_rename_additional_information_product_tab_label' );
function sc_woo_rename_additional_information_product_tab_label() {
return 'More info';
}