There are many places where you can watch Leela play. We participate in competitions, there are testing streams, and games are often covered by youtubers.
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Watch Leela play
CCCC
Chess.com computer chess championship (also known as CCCCC, CCCC and CCC) is a never stopping tournament optimized for entertainment. Organizers pick participants based on engine’s entertainment value. Particularly, clones are allowed to participate.
TCEC
TCEC (Top Chess Engine Championship) is a computer chess tournament organized and maintained by Chessdom at https://tcec-chess.com/. This page documents Leela configuration in each of the “seasons” of this tournament.