Hi Anita,
I'm Sumit, here to answer your query at the Microsoft Community.
Apologies for any inconvenience you are experiencing. We are happy to help you.
Windows 11 upgrade is still opt in only for Windows 10 users. Let us see which OS version are you on first.
Press Windows+R keys on the keyboard, or Right-click Start on the Taskbar and choose Run.
Type winver
Press Enter.
Note the Build number and post in the next reply.