Hi atiam1982,

Thanks for reaching to us.

There are 3 default tabs of WooCommerce:

+ The Additional Information Tab: Shows when the Attributes are added under a Product. If the Attributes are not added then the Additional Information tab doesn’t show.

+ Description Tab: This is the main description on the product page. So, if you want to hide it, just remove all description content.

+ Reviews: Used to show customers’s reviews.

Regards,