@NARIAHGREENWOOD and @philandjaime ...
At some schools, Canvas is not the "official" source of where your final grades are stored. Rather, those grades are often transferred to your school's SIS (Student Information System). This is where your "official" grades would be kept during your time at the school. Therefore, you would want to consult with folks at your school (maybe someone from your school's Registration department) to find out how you can determine your GPA. Each school handles things a bit differently, so please have conversations with people at your school...as it's not always correct to assume that Canvas is or should be the "official" source. I hope this makes sense.