Hello,
1) The product tabs are WooCommerce functionality and our theme doesn’t influence them. You can read the following article for further help: https://docs.woocommerce.com/document/editing-product-data-tabs/
The tab shipping and delivery is added through our theme. To remove it you need to clear the data in the additional tab under Theme Settings >> Product Page >> Tabs.
Screenshot for Clarification: https://ibb.co/PxkGWpn
To remove the product meta you need to add the following Custom CSS in the Global Custom CSS area under Theme Settings >> Custom CSS.
.single-product-page .product_meta {
display: none;
}
To remove the share button you need to Go to Theme Settings >> Product Page >> Share Buttons.
Screenshot for Clarification: https://ibb.co/dDQp0yg
2) Unfortunately, there is no option in Theme Settings to add a shipping calculator in cart sidebar and single product page.
Because the shipping is WooCommerce functionality and our theme doesn’t influence it.
You can try adding any third party plugin that better meets your requirements.
Best Regards.