The search term represents a "get rich quick" pipe dream that preys on technical ignorance.

What wallet.dat contains

The cryptographic keys required to sign transactions and spend coins.

Once the client syncs or you load the wallet, you can open the debug console (Help > Debug Window > Console) and use the dumpprivkey command to extract your private keys manually. Using Wallet Recovery Services

Scammers create fake wallet.dat files that appear to contain large balances when synced with the Bitcoin network. They modify the public key data to show significant balances, but when you try to spend the funds, you discover the private keys don't match – the wallet is a mirage.