where to get macOS Catalina 10.15.1 full download
I would like to upgrade my OS
I'm on OS Sierra now and would like to jump to OS Catalina 10.15.1
However I do not know where to look for a full download of that OS
I checked the Apple Store but no OS comes up
Where do I look for the download and how to proceed?
Thanks a lot!
MacBook Pro 13″, OS X 10.11