I tried to contact my classmates to ask for their notes, I email 5 of them and none of them have replied back. I have a high GPA and this course is my last course at the university, I really want to get a perfect mark. I was wondering if you could please tell me how can I study this course remotely? How should I approach the instructor? It would be ok if one classmate could record the class voice weekly for me, but no one would do this for me.
Talk to the instructor, ask them for advice.
Ideally you would have done this before the semester started knowing that you would have this arrangement, but at least the instructor was made aware ahead of time through your supervisor.
They are unlikely to be able to offer support that takes a lot of additional effort on their part because this special arrangement is due to your needs (placing the burden on you), but they may be able to facilitate note sharing, suggest an appropriate additional text, or possibly share some additional lecture notes or outlines of their own.
Let me add a long-shot possibility. Some universities have a way to record or even live-stream lectures. If you haven't explored this, you might see if it can be done. There might be a special office, audio-visual, or such. Even audio might be a help to you if you also have lecture slides.
Failing that, the professor might be able to record audio and send it to you or upload it to a web page. The quality would likely be better if there are professionals involved, of course.