for cron, the internet is full of examples.
here at the forum, for rclone, you can search, for example,
Automating rclone (crontab, etc) - #2 by Fatco1a
Issue with rclone running from cron - #27 by jiru
and best to search to the forum for cron and find post like
https://forum.rclone.org/t/automating-rclone-crontab-etc/21265/6