Easiest way is as follows:
- Run elecrum
- Go to file menu > save copy
- Give it a suitable name and save it some place convenient
Then just upload to your cloud storage.
IMO it's too risky to store a wallet on a cloud service, but you may feel otherwise.
Will it still have my normal password encryption ?
If you set a password first then the backup will be encrypted too. You can set a password from wallet menu > password.
You can also open your backup file and see for yourself whether it has the password or not. To open use file > open. Then right click on an address on the receive tab and select sign message. Try to sign a message and it will ask your for the password if the wallet is encrypted. You can also use this approach to confirm that you have correctly memorized the password.