Find below the best sources where you can get the main Balancer statistics:
Dune Analytics: A dashboard built by the community where you will find info about Liquidity Pools, LBPs, Exchange and Token and Pools breakups.
DeFi Pulse: A comprehensive source of knowledge about DeFi projects, where you can find Balancer and every other DeFi product basic statistics
CoinMarketCap: the world's most-referenced price-tracking website for cryptoassets
Etherscan: The most used BlockChain Explorer, Search, API and Analytics Platform for Ethereum, if you want to see every transaction happening with BAL and every other token