Mcgill is a very competitive school and your chosen field again is one of their hard to get in departments.
Also you have not mentioned your marks in grade 11 which is one of the deciding factors since your 12th grade results will be out after the admission decision so your 11th final and your 12th interim are deciding factors which you have not specified.
Check the website and call to verify but you generally need a 3.7 gpa/4.0 (A minus) and 1350 sat and it’s pretty set so I believe you won’t make it they do however only count the 11th and 12 grades and it’s scores and sat and a few other items great school
You need to connect with McGill for the answer to your question.
My time at McGill was almost 50 years ago.
Sorry but I think you will need marks well into the 90s.
McGill maintains very high admissions standards.