It depends on whether the VP buys the legal theories of John Eastman and Ken Cheseboro.
Without addressing their theories, I think the better view is the VP doesn't have the authority to decertify or certify. The count is already certified unless Congress rejects a state's certification.
“It depends on whether the VP buys the legal theories of John Eastman and Ken Cheseboro.”
It is determined by US 3 paragraph 15