My MacBook Air disks has been wiped out

Hi Rogers_MCMXCI,

When you restart your computer as it boots up, hold command + R,

this will go into disk utility where you should be able to reinstall the OS. If not, you can also take it to the apple store with a genius bar appt and they should be able to do it for you as well.

If you have any questions, please let me know.

Hope this helps!

I would try going though this https://www.easeus.com/mac-file-recovery/mac-no-startup-disk.html

and see if this works. Otherwise yeah just take it in and they should be able to do it for you with no problem!

Best Regards!

And, once you have it working again, I'd suggest changing your Apple ID and password so you can start over fresh.