You can do SAP BI however you are MBA in HR, I suggest you to go with SAP Cloud certification with SuccessFactors. SuccessFactors certification is highly in demand.
once you are comfortable with consulting areas of successfactos, still you are interested into SAP BI certification, you better select SAP HANA certification
SAP HANA is more booming than SAP BI. Overall SAP certification is in demand. You will realize the joyful ride of your career once you start SAP career.