Dear Assessing Options:
As you have learned in your MBA, you should define your goal, identify options, outline objective assessment criteria, and then evaluate options to determine the best course of action. Obviously, all this must be grounded in your ambitions and interests. Your choice of Canada is a bit peculiar. Why not the US or UK or any other country for that matter?
You have adequate academic qualification to pursue a Master's degree in just about any country, provided your areas of prior studies are acceptable to the target program. Given your MBA from India, you can pursue a Master's in any business-related area, such as marketing, finance, organizational behavior (OB), human resources (HR) management, and so on.
You can also pursue a Master's in computer science, but you would be required to take additional courses - a kind of Pre-MS program - to acquire the fundamentals of computer science before you can formally begin the MS program.
The choice of whether you should pursue a Master's program in a business-related field or computer science is obviously yours. Professional programs, such as an MBA or Master's in computer science, tend to have a greater value in the employment market.
It is possible that your ideal curriculum could be in a program other than business or computers. For example, your interest in art and HR and your non-interest in mathematics might make you a good candidate for a program in psychology or in communications.
Most good schools in the US and Canada require some sort of relevant standardized entrance exam, such as the GRE or GMAT, for graduate studies, although admission requirements vary across schools. We would recommend that you focus on your goal and fulfill the requirements, even if it includes taking an entrance exam. Taking the GRE or GMAT would certainly require additional effort and hard work, but such is the price for success. Focusing on the details, such as the entrance exam, and losing the focus on your goals and ambition is not an approach to achieving success, as you must have learned in your MBA.
The TOEFL is intended to ensure that your have adequate proficiency in the English language. As such, it is merely a threshold test; you must score higher the threshold set by individual schools. The amount by which you exceed the threshold is irrelevant.
We strongly recommend that you read
iMahal's Authoritative Guide for Studying in America and Canada. This guide will help and guide you through all aspects of your search and decision-making.