How can I view the participants marks and how to send automatic sending certificates

To view the submissions, please follow this guide: https://www.jotform.com/help/269-How-to-View-Form-Submissions

To send autoresponder email with Certificates attachments, please check these guides:

Setting-up-an-Autoresponder-Email

How-to-Attach-a-File-to-Autoresponder-Emails

How-To-Include-Submissions-As-PDF-Attachment-In-The-Email-Notifications

Please try it and let us know if you need further help. Thank you.