It's easy enough to set up a batch file or script to copy a file and call it from Task Scheduler.
But it gets complicated quickly when a folder may have multiple files and sub-directories and Windows starts querying existing contents and merging directories, permissions etc. And you'll have to handle or Ignore errors.
I'd recommend you use a 3rd Party tool.
Easeus Todo Backup Free is very good and has a built-in scheduler.