You can enter the Samsung account password on the Samsung account page account.samsung.com forgot password and follow these steps:
Enter your registered email address in the field provided.
Click Next.
Your system has created and sent a password link to your registered email. You need to access your email.
Go to the email and open the link in your web browser.
You must now follow the instructions to reset your password.
The self-generated link has a lifetime of 30 minutes, after which you will need to make another request. If you do not have access you need access to your registered email You can use the recovery suite to recover the password.