If the wallet does not have 0.01 ETH or BNB on the mainnet, which prevents you from claiming water on the official website, you can go to the neighboring exchange to claim water, which has lower requirements. Then, you can send the claimed IP to your Binance wallet to complete the task.
If you don't know how to find the claimed IP test currency, first find the story testnet, then click to add tokens to find the IP. After a while, when the wallet receives the claimed water, sending it to the Binance wallet will complete the task.