I worked for my brother in law, he never paid me over 6 months? how do i recover my wages?

I worked for under the conditions we agreed on, that I manage the shop, and he promised me a used car from his shop and to compensate me for wages after he opened. When I got frustrated about not being compensated, he belittled my work (after) and then dismissed me. I have some photos and text messages of work I performed. I helped to gut, re-model (hard labor) and also set up the office and made a few bank deposits, promoted the business everywhere and ordered supplies made pick-ups and handled deliveries. This is my Brother-in law, I thought it would be a great opportunity for me to work in my neighborhood, and for a small business tow of my goals after I graduated from College in 2015.