Hi there,
To echo MSc International Business Student, international students work up to 20 hours a week. If you are domestic student, my friends have worked up to 30 hours a week. It really depends on your financial needs and course needs (most importantly).
If you are looking for more opportunities, try reaching out to your University. They may have some flexible work opportunities for students (i.e., research assistant, student ambassador).
Happy to provide more context.
Thank you!
Aleks (She/her) - Law student