RPA bots could work 24/7 without needing any form of human intervention. Because RPA is all about automating the repetitive, redundant tasks, across multiple systems tirelessly. With RPA employed you could ensure effective error-free operation.
If you wish to get trained in RPA, I would suggest you enroll in an RPA course from Intellipaat which would help you in building practical skills, through guided projects and exercises. Also, check out the YouTube video on Selenium vs RPA to get a better idea about these two tools.