How to get the status of each task execution

[ForcemCS]

I'm learning about tekton.I already know Trigger, TriggerBindingTriggerTemplate, EventListener. i now have this requirement:

1. suppose my TriggerTemplate's pipeline is associated with two tasks that send a message to the mailbox when the task execution succeeds, and send a notification to the enterprise microsoft webhook when it fails (which is often used).
2. how can i get the status information field about the tasks.
3. is there any example like this for reference