The business school of your choice may require you to pass the TOEFL (Test of English as Foreign Language) or IELTS ( International English language Testing System) tests as well as the GMAT. The school to which you apply will inform you of its policy.
You have some advantages as well as disadvantages of not being a native speaker of English. Native speakers make a lot of grammatical mistakes as they are used to of slangs or local dialects.
You need to concentrate on basics, start with English grammar and don't forget to practice every day.
