This applies only for residents of SEPA countries*: An IBAN (International Bank Account Number) is your bank account number turned into an internationally recognized format. Your BIC (Bank Identifier Code) is the international version of your sort code. Your IBAN and BIC can be found on paper bank statements or in your online banking platform. There are also a number of trustworthy IBAN converters available online. More information can be found here: https://www.business.hsbc.uk/en-gb/payments/clearing-and-foreign-currency-payments/iban-and-bic
*If your country doesn't have IBAN and BIC, you can sign up on payoneer.com and request a European card. The "Global Payment Service" section will then list your IBAN and BIC.