@Partho Karmakar Confidence scores for structured fields are currently not supported as mentioned in the note on this page.
I can also confirm that this is a feedback item that the product team is aware of but there is no planned release to support the same in the near future. Please see this recent issue confirming the same.
However, this is a roadmap item with no ETA at this point of time.
If an answer is helpful, please click on or upvote
which might help other community members reading this thread.