Good time to read your Constitution & amendments,
Only Biden & Trump received Electoral votes. No third person. So Congress can only elect one of the two. Or be stalemated indefinitely.
Kamala harris is fairly certain to have 51 votes in the Senate and will be sworn in as VP on 20th.
If there is no Pres, kamala is Acting President. Temporarily.
Heels-Up Harris will not be vice president. Sleepy Joe will not be president.