How to determine build of a sealed boxed MS usb ?

Hello to the forum.
Following very helpful advice from "OldNavyGuy" on this forum I am trying to do an in-place re-install of w10p.
Long story ... ending in cannot download ISO (yet).
So went looking for it on USB.
Trouble is that when I ask about build numbers all they have is a code on outside of package.
Example "X19-94883-02"
Tried this post Find Windows 10 Version Number
But cannot connect to the number I have been given.
I am looking for 1909 (as per current brick).
Might there be any other clues on the external package or do these numbers make sense to those wizards that dwell here ?
Paul

Thank you ... but the primary problem is the inability to download ... so stuffed before I start .... this thread has the details.
Not BSOD - but error -2147219195, blank settings, no services and more
Paul

To add some context to what's already been posted -

In this example, the install file in the sources folder has the file extension .wim

It could also have the extension .esd

The drive letter in the example is E:

Yours may be different.

So by executing the highlighted Dism command in an elevated Command prompt, it shows these results -



The highlighted Version (10.0.19041) and the ServicePack Build (264) = 10.0.19041.264, which is the initial version of Windows 10 2004 (20H1) which was released in May.