Dear Cunard,
Good day! Thank you for posting to Microsoft Community. We are happy to help you.
As per your description, you may try this formula: =IF(SUM(B9:F9)=0,"",SUM(B9:F9))
If this is not your requirement, could you please upload a screenshot of your data sheet view for our reference so we can understand your exact scenario and provide our suggestion in a productive manner, perhaps some related screenshots will be helpful.
Your understanding and patience will be highly appreciated. I hope that you are keeping safe and well!
Sincerely,
Waqas Muhammad