I suspect that if you're being told that there's a lively debate among constitutional scholars as to the role the VPOTUS has in certification, they may be lying to you.
The only occurrences for any version of "certify" including "certificate" appearing in the constitution is in Article 2 section 1, which deals with the electors, and the 12th Amendment (as above), which replaces a portion of Article 2 section 1. Also, in the ratification section of the Constitution, which dealt with the initial exercise. If the VPOTUS has any powers implied here, they must be hidden in a penumbra even more obscure than the deep shadows of nothingness where SCOTUS found the justification for R v W. Which is to say, it's not there.
The VPOTUS, as the president of the senate, gets the votes, signed, certified, and directed to him from the electors. His role is to preside over a joint session of congress to count the electors' votes. You guys keep saying certification. The only certification in the constitution is the certification that electors do when they sign the lists required by the constitution. Now I am not claiming to be a constitutional scholar. But if I am misreading this, you'll need to point out exactly where the constitution gives the VPOTUS any authority to certify anything, much less change the slate of electors, or have any other power that could possibly have made Trump the winner of the 2020 election.
