He had already said that millions were going out a day and his administration increased that number.
This, IMHO, shows that Biden is trying to twist things to make it look as if he came in and took charge to make vaccines available, which is dishonest.
But when Biden says that there was no vaccine, no backlog, millions were going out a day, nothing left in the fridge, etc. then it is very dishonest to pretend this means that there was simply no vaccine. It is dishonest to the point it is a lie.
The question is how much of a stockpile was there at the federal level. If there was a stockpile (the DNC claimed there was, that Trump was holding them for a second dose and they should be going out) then President Biden is caught in a lie.
I understand that you cannot comprehend Biden's comments. To you they appear incoherent. But perhaps this is willful confusion on your part. If you truly cannot understand what Biden said, no matter how unprecise the words, then that is on you because you seem to have had very little problems understanding what President Trump said when he was less precise with his words.