This paper proposes a mechanism for vacuum level selection in universes generated through black hole collapse. In the framework of gravity–vacuum energy correspondence, gravitational energy accumulated during black hole collapse can induce transitions between discrete vacuum energy levels of spacetime. The magnitude of gravitational energy determines how far the vacuum energy level of the newly formed spacetime domain shifts relative to that of the parent universe. During this process, quantum vacuum bubbles may nucleate in the high-curvature region and release energy that drives rapid inflation. The balance between gravitational energy driving downward vacuum transitions and inflationary energy driving upward transitions determines the final vacuum state in which the new universe stabilizes. If the inflationary energy is insufficient to raise the entire spacetime domain to a higher vacuum level, the universe stabilizes at a lower vacuum state. Conversely, if sufficient energy is available, the spacetime domain may partially transition back to a higher vacuum level before stabilization. This mechanism naturally produces universes with different vacuum energy states and potentially different physical constants. The model therefore suggests a possible physical process underlying vacuum selection in a multiverse generated through black hole cosmogenesis.