I have completed my BBA with 58%,want to do masters which country should I choose?

Hey, you can go for the USA as it offers some of the best MBA courses.

 An MBA in the USA can be a 1 to 2-year-long course, depending upon the type of program a candidate has selected. Based on personal choice and availability of the specialization, applicants can opt for a regular MBA, Executive MBA, or Part-time MBA.
The course structure of the MBA program is designed in a way to provides a combination of internships and project work. Because of the prestige of its educational system, approximately 75% of prospective students select the United States as their study destination.

TOP UNIVERSITIES IN THE USA -

Stanford Graduate School of Business, Stanford University

Wharton School, University of Pennsylvania

Sloan School of Management, Massachusetts Institute of Technology

Harvard University

Columbia Business School

NOTE - Applicants have to make sure that they have a good GPA in the previously acquired degree to the admission process easy. 
Must have completed 16 years of education, which means 10+2+4 education or complete a four-year bachelor’s program
Ensure that you have relevant work experience as demanded by the university. 
A bachelor's degree from a recognized examination board. 
IELTS/PTE/TOEFL scores are required to study abroad for non-native speakers of English.  
GMAT or GRE scores, depending upon what is acceptable at the university. 

I hope this helps!