Hi MiniSputnik,

Thanks for reaching to us and your patience.

If you want to add more tabs you can do this from Theme Settings > Single Product > Tabs > Additional tabs.

If you want to add more than 3 tabs and all of these are static information, then you can combine with 2 additional tabs in Product Setting of Single Product https://prnt.sc/RQPGowgjDQP2

Please refer to this article https://woo.com/document/editing-product-data-tabs/

Regards,