No. ISC certification campaign reports don’t support adding or configuring custom columns. SailPoint documents a fixed set of columns for each campaign report type, and there’s no supported “column chooser” or configuration option for campaign report downloads.
https://documentation.sailpoint.com/saas/help/certs/campaign_status_reports.html?
If you need extra fields, the supported approach is to export what you can from Search and then join outside ISC (Excel) using a shared key (identity name, account name, etc.).
(For reference, SailPoint community guidance aligns with this: campaign report columns can’t be changed. Get Campaign Reports Configuration )