For Scheduled backup, the Windows username & password that you use when signing onto the computer: Reference: Step 5. Creating a backup schedule: In the User account section, specify the user name and password of your account on this computer. The data of your account is required to access files during backup.
Unless the Skyworth TV box meets Kaspersky VPN Secure Connection for Android, hardware and software requirements, it's not possible.
💥There are no apks that we know of & making recommendations for third pty software is a breach of Community rules.