Estimates in tasks on the board

[Taras Fedorov]

JIRA Cloud, SCRUM board

I Have a task on board with some childs. Child tasks were estimated, but in parent tasks in a board backlog I don't see any estimates.

Board settings are: Original time estimate, Remaining estimate and time spent

Is there any way to calculate parent task estimate on a board as a sum of child?

[Nic Brough -Adaptavist-]

You need to estimate the tasks, not the sub-tasks.

When you're doing scrum, you don't promise sub-task progress to the product owners, you commit to trying to to the tasks.  Sub-tasks are a convenience for the developers to chop up the work into manageable chunks, not something you estimate for the product owner - they don't care if you've done 0%, 1% or 99% of the subtask - the task you committed to is either don or it is not.