Where do I find my wallet address?

Tap Settings → "Non-custodial wallet." There you'll see your wallet address (tap once to copy), your balance, how your wallet is secured (your passkey), and a Network option to switch between Celo and Arbitrum. The same address works on both. Only share your address to receive from another crypto app or exchange, and tell the sender exactly what's accepted: USAT or USDT on Celo, or USDT or USDC on Arbitrum — nothing else. Any other coin or network is almost always lost for good.