Hi @CC ,
Do you want to apply the header and footer of the report to other reports? I am sorry that I am not good at using scripts.
You could refer to: Update all SSRS reports to apply consistent header / footer on demand.
If the answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.