To access the testnet funds (Sepolia) you can use one of the following third party faucets:
You can use LearnWeb3's zkSync Sepolia Faucet to claim zkSync Sepolia Testnet 0.01 ETH per day.
zkSync testnet faucet by Chainstack
Chainstack Faucet is an easy to use Multi-Chain Faucet. You can use Chainstack Faucet to claim zkSync Sepolia Testnet 0.05 ETH every 24 hours. Chainstack API key is required.
Use any of the following faucets to claim SepoliaETH, which you can bridge to zkSync testnet using the TxSync bridge.