Loud roaring noise while driving?

Loud roaring noise while driving which feels like a wheel bearing, lifted all wheels and all are smooth, then placed the car in gear and let the front wheel move and the axle is making a horrible noise on driver side. I see some wear on outer boot but the noise and unbalanced movement is from inner boat so I removed to replace it. Didnt expect this much fluid to come out so am gone drain and fill, mind as well. Need the fluid type, capacity and whether this is just a fill till it starts to spill or another way to fill? And where are the fill/drain plugs plz