Hello,

Go to Theme Setting -> Single Product -> Tabs -> In the Additional tabs section here are three additional tabs:
https://ibb.co/vYHFK0X.
https://xtemos.com/docs-topic/product-page-options/

And if you want to add more tabs Please consider using Woocommerce builder:
https://xtemos.com/docs-cat/woocommerce-layouts-builder/?theme=woodmart

You can create a custom template for the single product and insert any content: https://xtemos.com/docs-topic/single-product-page-builder/

Please check this.
Here is an article from WooCommerce documentation that may help you customize your product page tabs
https://docs.woocommerce.com/document/editing-product-data-tabs/

Best Regards.