Lets break this down on why your questions are invalid because they contain errors rather than facts.
FACTS? ... HIGHLY CONTAGIOUS RIGHT? THE KILLER GERMS LASTING FOR 12 TO 14 DAYS RIGHT?
So far so good. You're not exactly wrong. It does appear to last around two weeks or so.
MILLIONS INFECTING IN WUHAN RIGHT ?
Wrong, there were only 86,000 that were infected in Hubei, China where the city of Wuhan is located.
See the following:
imgflip.com/i/41y876
which is taken from here
https://www.arcgis.com/apps/opsdashboard/index.html?fbclid=IwAR1fOenKLJz90lHZM-R3sapD3z75Eu5yql2OH88HsvwRCC-Bq0BwVIy17uU#/bda7594740fd40299423467b48e9ecf6
POPULATION OVER 10 MILLION THAT TRAVELED TO BEIJING /HONG KONG AND INTERNATIONALLY TILL LATE JANUARY INFECTING TENS OF MILLIONS RIGHT?
As far as we know, only eighty-thousand cases have been reported in China and almost five million cases reported worldwide so no, tens of millions were not infected during that time.
WHERE ARE THE MILLIONS THAT ARE DEAD ?
I imagine they're where they put dead people. Though I could be wrong.