I would generally expect that every Presidential election every 4 years would probably have the most votes ever.
I would guess the the population of the US is going to be the largest ever, every 4 years.
I don't know how many more people there are in the US now than 8 years ago, maybe it's well less than 10 million?
And I do think there was massive voter fraud and that Trump won.
But you really should take into consideration that there are always more people in the US every 4 years.
A quick look at the internet has 331 Million US population 2020 and 313.9 Million US population 2012.
That's 17.1 Million more US population than 8 years ago.
I don't think that Biden actually got 10 Million more votes than Obama.