1. I completed my mechanical undergraduate with a 6 CGPA but want to do my MS in the USA or Canada in computer science. What are the chances of admission?tips to get admission and for the visa?

With an MS in Computer Science in USA, you can take your place at the forefront of computing research, education, or industry. Apart from theoretical knowledge, the top universities in USA for MS in Computer Science also equip students with expertise through hands-on experience and working with world-class faculty members.

Here, providing some details about international students' eligibility and additional requirements for a Master’s in Computer Science in the USA.

 Bachelor’s Degree ( minimum GPA of 3.5 is a must)
English Language Tests Scores
GRE/GMAT
Work Experience
Passport and Visa
 

The following documents will be submitted along with the application to the best institutions offering a Master’s program in computer science.

Education transcripts of previously attended institutions
Standardized test scores (GMAT/GRE)
Letters of Recommendation (at least 2)
Updated Resume 
English Language Test Scores
Statement of Purpose
Proof of finances
Valid Passport
Study Permit

The best colleges for MS in computer science are: 

University of Oxford, UK
Stanford University, USA
University of Toronto, Canada
University of Sydney, Australia
the Technical University of Munich, Germany.
 

I hope this was helpful, or you can directly talk to an expert here.