Dear KSP,
Here is a demo for your reference. You can use the formula below to see the result.
=IF(AND(Performance="Exceeds",Potential="Breadth"),9,IF(AND(Performance="Exceeds",Potential="Balanced"),8,IF(AND(Performance="Exceeds",Potential="Depth"),7,IF(AND(Performance="Meets",Potential="Breadth"),6,IF(AND(Performance="Meets",Potential="Balanced"),5,IF(AND(Performance="Meets",Potential="Depth"),4,IF(AND(Performance="Needs Improvement",Potential="Breadth"),3,IF(AND(Performance="Needs Improvement",Potential="Balanced"),2,IF(AND(Performance="Needs Improvement",Potential="Depth"),1)))))))))
Welcome to share any updates when you have time if you need further help on this issue.
Thanks for your effort and time!
Sincerely,
Cliff | Microsoft Community Moderator