To create a catch-all email account in Plesk please review the following guide:
Step-by-step: Creating a catch-all email account in Plesk
To create a catch-all email account on a parked domain, please create the email forwarding alias ‘catchall’ in your Domain Control Panel, please see the following Knowledgebase article on how to create an email forwarding alias for a parked domain:
Creating an email forwarding alias for a parked domain
We would recommend that you create specific email forwarding aliases in place of a catch-all, as a catch-all is likely to attract spam.
For more information you might find this hosting guide index useful: