I have heard differently- that he does have that authority. But I could be wrong.
Here is an article describing the timeline:
“The House and Senate convene for a joint session on Jan. 6 to count electoral votes. Pence presides over the process as president of the Senate and announces the results. The candidate that receives at least 270 out of 538 electoral votes becomes the next president.
Any objections to the electoral votes must be submitted in writing and signed by at least one House and one Senate member. If an objection arises, the two chambers consider the objection separately.”
https://www.cnbc.com/2020/11/10/heres-when-the-results-of-the-2020-election-will-be-finalized.html
There are many sources on line that say what or what could happen.