[Alberta's Child]

The Constitution requires the VP -- as President of the Senate -- to open the certified electoral votes from each state. That's it. As the 12th Amendment says:

The President of the Senate shall, in the presence of the Senate and House of Representatives, open all the certificates and the votes shall then be counted ...

Guess what -- that really IS it.

The only discretion Congress has is in cases where one state has multiple certified electoral votes. That was not the case in 2020.

[Olog-hai]

No; there is no limitation in that text. Do you see the word “only” anywhere?

Not to mention “the votes shall be counted” does indeed imply legitimate votes.