I have a small lump on my skin, is it basal cell?

Unlikely: Basal cell carcinoma at your age in highly unlikely. Based on your other questions, you seem to be obsessed with various skin cancers. It may help you to seek counseling. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.