Problem extracting ISO's=Errors

[Dudelin]

I have downloaded ISO's from UUP dump for Win 10 but have come up with 2 issues.  On the first part I've gotten a few errors but they restarted and I believe completed.  On the second short part within the blue border I get a couple errors quickly re the Wim.  Question: do I need this last section to make my Ventoy work as a boot drive?  Also, I've gotten confused on which file to download to the drive.  It's a new dual A/C and being a novice I'm afraid to mess it up on the first try.  I believe it should be a large file.  I have 2.  One has "convert" on the end of the file name; = zip ?  The other is slightly smaller and named UUP.  I've been trying to get/google an answer for many weeks.  I am trying to fix a laptop that won't accept pin/password because msconfig was changed to diagnostic.  Hoping for a quick reply...