Your vault holds more than passwords. Saving a credit card works the same way as a login: card number, cardholder, expiry date, CVV and PIN.
A password manager that only holds passwords leaves the rest of your life on paper. Card numbers, account details and recovery codes are the things people end up photographing and emailing to themselves.
The entry appears in your vault immediately and syncs to your other devices. Search finds it by name, and the filter chips narrow the list by type.