There’s no such option yet (this would require a custom implementation), but we plan to add the HivePress account menu as a drop-down list in the header section. It’s also possible to add drop-down menus to the header menu items in Appearance/Menus.
If you mean merging 2 account pages completely (WooCommerce and HivePress) there’s no easy way to do this since each plugin implements its own pages and layouts, but HivePress merges some pages from WooCommerce automatically (e.g. Orders) so displaying and using the WooCommerce account page is not required.