1) Make sure your wallet is connected to the Polygon network and "Connect" to the website to proceed. You need to make sure the "CAPTCHA" is completed to proceed.
2) If connected properly, your wallet information will be displayed. Make sure the "CAPTCHA" verification is completed for the second time.
3) Click "Receive" to set up the transaction to recieve the $MATIC. If you already have enough $MATIC in your wallet to do a transaction, you won't be able to receive the faucet.
4) The website will pop up a "Transaction sent!" message if the "received" function is executed correctly. You can also check the transaction details on the Polygon block explorer. You can do this operation for a maximum 3 times in a day.