This seems exceptionally high, and contradicts the dev level errata in the Interstellar Players 2: Jihad Conspiracies thread, which says the BV is 190.
Interstellar Operations contains rules for running an entire faction’s military as a player tries to conquer numerous solar systems, including rules for how to conduct warfare through any of the various scales represented within the core line of rulebooks. The BV for the Centurion Weapon System is listed as 750. Interstellar Operations zooms up to the final level, allowing players to assume the roles of House Lord or Clan Khans and dominate the galaxy. The former focuses on a whole new level of excitement directly on your gaming table while the later focuses on moving from a single scenario to a multipart campaigns and how to take an entire solar system. Marshal your forces and prepare to conquer the Inner Sphere! Interstellar Operations is the next long-awaited rules installment to the series begun with Total Warfare and carried through the award-winning Tactical Operations and Strategic Operations. The original joined edition is no longer available. On 21 March 2022 the content of Interstellar Operations was split into two new books that are sold separately: Interstellar Operations: Alternate Eras and Interstellar Operations: BattleForce. This article covers this particular release until the finalized product is released. Initially, Interstellar Operations was released as a Beta version. They are broken up on size scaling of force from Company/Trinary size units to multiregiment task forces to be used conqueror entire solar systems.
The last section of the book has various rules that allows large scale campaigns on interplanetary levels. It also provides rules for use and construction of unusual and rare combat units such as Land Air Mechs, Superheavy BattleMechs, and QuadVees. The book is broken up in sections which covers era-specific experimental technologies from the Age of War to the Late Dark Age Era. Interstellar Operations is the last of a series of core rulebooks written for BattleTech.