GMAT

You're required to have minimum 12 years of primary and secondary education and should have Senior Secondary Certificate of Education or an equivalent certificate from India.
You should apply to your desired universities. The university courses in Australia usually begin from early March so make sure that you start with the course and university searching a good 12-15 months prior to the submission of application forms.
Its recommended that application forms be submitted 8-12 months prior to the closing date of acceptance of application forms. Students have an option to download and print the application form from the university's official website and use it as a regular hard copied form.
Students must possess good English language skills and for that purpose are required to take an IELTS exam, which is the only English proficiency exam accepted by the Australian Department of Immigration and Citizenship.

Hi,
The Graduate Management Admission Test (GMAT) is an entrance test which is conducted by the Graduate Management Admission Council (GMAC) in order to assess the candidates analytical, writing, quantitative, verbal and reading skills. These skills are put to test in order to grant admission to the management programmes such as MBA.
List of Indian B-schools that GMAT scores for their MBA, PGDM and EMBA programmes:
Asia Pacific Institute of Management
Amity Business School
IIM Indore
KIIT-SOM
MCI Management Center Innsbruck
Bangalore Institute of Management Studies
Amrita School of Business
Acharya Group of Institutes
Great Lakes Institute of Management, Chennai
Bennett University, School of Management
T. A. Pai Management InstituteXLRI Jamshedpur
There are various Indian B-schools accepting GMAT score for the same you can refer the below link:
https://www.shiksha.com/list-of-indian-b-schools-accepting-gmat-scores-article-4213-1