Is it possible to set up iCloud Keychain without a mobile phone? If it is possible then how can I do it?
On your Mac:
- Open System Preferences > iCloud
- Check the box next to "Keychain"
On an iPad:
Settings > iCloud > Turn Keychain On
If you don't have any phone that can receive SMS it looks like you will need to call Apple Support to activate iCloud Keychain.