Hello,

I saw the screenshots you attached.

The About Brand is displayed because it seems to be enabled from Theme Settings >> Shop >> Brands.

Screenshot for Clarification: https://ibb.co/hHbjndF

To Remove the shipping and delivery tab you need to Go to Theme Settings >> Product Page >> Tabs.

Clear the data in the additional tab content.

Screenshot for Clarification: https://ibb.co/tKJ1Lgd

Best Regards.