Monero CLI will then ask you to give your wallet a password and confirm it. Since your wallet will hold your private keys and seed, it is really important to enter a strong password.
Next, Monero CLI will ask for a `Restore height`. Even though it is optional, it's not recommended to leave it blank, since setting a restore height makes your wallet synchronization faster. Ideally it should be the number of the block which included the first incoming transaction to your wallet. Alternatively, you can also enter the date or an estimated date (YYYY-MM-DD format) of the first incoming transaction.
After you have entered restore height, Monero CLI will then restore your wallet and start the wallet synchronization. Please be patient as this process may take a while. You will need to wait for it to finish before start using your wallet.