WHen you play a live game, the captured pieces are just to the right of the chessboard toward the top.
It shows the pieces and gives a count.
How To See Captured Material in Live Chess?
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This explains it, but it's for Online Chess.
https://support.chess.com/customer/portal/articles/1444799-how-can-i-see-the-captured-pieces-and-material-count-
Is this option available for Live Chess?