Calm down and don't panic.
Go to the login page (https://www.scard.business/auth/login) and choose "Forget Password?" The email address you use to create your Scard Account should come into mind.
Check for a link to reset your password in your email. If you didn't notice it in your inbox, check the spam folder in your email account. If this doesn't work, create a ticket in the Scard helpdesk.