Why would my scalp is oozing a clear odorless liquid i have never dyed my hair, i do have eczema on other parts of my body but not never in my scalp.

Eczema: Since you have eczema on other parts of your body you may have it on your scalp, or a myriad of other conditions. The only way to tell is to have a professional examine your scalp and make a diagnosis. please make an appointment to be evaluated.

Consider seborrhea: I wonder if this might be a seborrheic dermatitis. The best person to give you advice is a skin doctor.