Yes you can delete it.  The location is usually used for temporarily saving downloads for Dell update    
I have almost 3,5 Gb in c:\Users\Alexey\AppData\Local\Dell\CommandUpdate\Temp\ and I am trying to do a cleanup.    Can I delete files there? The folder is named "temp" but the date of creation is 2020 Now is 2021.    
Free up space in \Users\Alexey\AppData\Local\Dell\CommandUpdate\Temp\