Oliviaamaay123 No, in order to set up the email account on a new device your parents will need to know all the account details including the passwords. This is all set out in the help page linked to earlier by Steven_L
Due to recent security changes made by VM the process is complex especially if they don't know their existing password.
Do your patients still have a VM broadband account to which the email address concerned is attached?
Post back with your reply and the VM Forum Team staff should be able to advise how to progress.
Just to set the expectation level your parents will need to change their account username to a third party email address once they have gained access to their My Virgin Media account. After that they will need to generate an app password for use with an email client on the new device. Again all this is explained in the help page.