@Dominions Son
One could argue that Vice President isn't properly an office. Other than breaking ties in the Senate (which hasn't happened often) the VP has no official duties. He's a spare for the President.
Realistically, nearly all the time, you're ALMOST correct. The Vice-President DOES have a job - not just of breaking ties in the Senate, but also of being the President of the Senate. Why is this important?
Twelfth Amendment to the Constitution: 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. Stop right there.
What does this mean? It means that the President of the Senate, and he alone, has the full plenary powers to count the votes for President. Before you can say, so what, there has actually BEEN an election where the President of the Senate happened to be the leading contender FOR the office of the President, and due to flawed electoral college votes, he simply only counted those votes for himself, thus giving HIMSELF the Presidency.
Oh, but that couldn't happen again! Except it already has - in a later election, where, due to the weather, the electors of a state did not cast their votes as they should have. Over the objections of both Senators and Representatives, because the state did not follow the Constitution, the President of the Senate opened and counted those votes. Granted, they didn't make a lot of difference in the total of that election, but the precedent has been set that the President of the Senate, and he alone, determines which certificates get opened and counted.
That means that on January 6th, the states are read off alphabetically. Vice-President Pence, as the President of the Senate, is the SOLE power of which certificates he opens. They're done in alphabetical order. So, he can quite literally say, "I hereby open the certificate of the lawful federal election from Alabama. The nine electoral votes from Alabama are for Donald Trump, and zero for Joe Biden. I hereby open the certificate of the lawful federal election from Alaska. The three electoral votes from Alaska are for Donald Trump, and zero for Joe Biden."
Here's where things get fun - because they ARE Constitutional. "I hereby hold in my hand TWO certificates with slates of electors from Arizona. As members of the State Legislature of Arizona have voted to decertify the results of the State of Arizona, I find that no presidential electors were appointed in Arizona. This competing slate of electors is deficient in having not been properly certified. Therefore, the chair rules that Arizona presents zero votes for Donald Trump and zero votes for Joe Biden."
If he does the same for the seven states that have serious issues - Arizona, Georgia, Michigan, New Mexico, Nevada, Pennsylvania, and Wisconsin - because all seven of those states have TWO slates of electors that have been sent to him - then guess what the final electoral total is?
232 for Trump, 222 for Biden.
The sentence in the Twelfth Amendment that follows reads: the person having the greatest number of votes for President, shall be the President, if such number be a majority of the whole number of electors appointed.
Since seven states appointed ZERO electors - President Trump is re-elected as per the Electoral College AND the Constitution.
So, yes, in this particular case, as has happened twice in our history, the Vice-President SOLELY holds in his hands the power to determine the Presidency. Plenary and unappealable - because of President of the Senate, he runs EVERYTHING that day. You object? He can rule any and ALL objections as 'out of order'.
Note that I'm not saying that this is what WILL happen. But the office of Vice President is a little more important than simply a spare tire, kept in the trunk and hopefully never used.