VATCs usually sponsor instructors when they need additional resource - either because they are looking to recruit a full-time instructor or would like to partner with a freelance instructor.
If they don't need the resource, there's not much you can do - there's little point in becoming a VCI if you wouldn't be able to get the work afterwards.
Rather than go down the VCI path, it seems (from a Google search) there are non-authorised providers of VMware training in Nepal so perhaps you could consider that as an alternative.
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