Chances of Bot getting Crashed while running..!

How much Robot is prone to Crash or Stop while running -

  1. Continuously.
  2. For period of 1-6 days.
  3. For indefinite time.
  4. With Delays ( Seconds < Delay < Hours ) at different checkpoints in workflows.

Please help in getting these queries cleared as it will help with to deploy my first Robot for client.

Thanks and Regards,