Profile Evaluation Request : Ask Personal MBA Coach

I want to pursue a PhD in marketing from top 20 b-schools globally in the next 3-4 years. Can someone please help me what score I should target in GMAT and what else can be done to better my profile ? Here are my profile details :-

Indian female, by the time I will apply I will be 26/27
Bachelors in chemistry (grade 8.5/10), MBA from IIFT (2.56/4.00) highest is 3.47
About to start job . Role - management trainee sales in a chemical industry MNC
EC - 2 yr member of women empowerment club & editorial board of UG, 1 yr member of Hostel committee in PG
Internships - 1. Marketing intern at a medical devices MNC 2. Sales intern at an ed-tech startup
Competitions - National semi-finalists in 3 marketing corporate competitions

Post PhD goals - Assistant professor of marketing

Appreciate any responses,

Thanks