To render with V-Ray in Blender, you need V-Ray Standalone which is part of a V-Ray Render Node licence. V-Ray Standalone is a full-featured command-line renderer that supports V-Ray’s native .vrscene file format.
V-Ray Standalone is now part of the Chaos V-Ray Suite and available to new customers on monthly, annual and three year licences. Please see our main Chaos V-Ray page for more information.
Existing V-Ray Standalone users can upgrade to the current perpetual version but perpetual licences are no longer available to new customers