1 - Navigate to %appdata% on folder search bar
2 - Double click Komodo folder
3 - Copy wallet.dat file
4 - Paste in secure location
More information: Wallet encryption is not available for zero knowledge proof forks. Komodo uses zk-snarks and thus falls under this category. As the technology matures, the encryption feature will become available. In the meantime, there are other options to keep wallet.dat backups safe such as Veracrypt or encrypted USBs.