Actually if you do this course do you get visa to work there in France for a Master's?

Yes, you can get a visa to work in France after completing your master's degree there.

As an international student, your student visa allows you to work up to 964 hours/year during your studies. After graduation, you can apply for a "job search or business creation" permit, which lets you stay in France for up to 12 months to find a job related to your field or start a business. During this period, you can work under the same conditions as your student visa.

Visa rules are subject to change.