Thanks for your query.Based on the facts that you have posted it appears that you have either Sebaceous Cyst
or Boil over your scrotum
However this needs to be confirmed by clinical examination by a qualified general surgeon
Normally they fade away without treatment however they need to be treated if increase in size or get infected.
Please consult qualified General Surgeon for clinical evaluation and further treatment.
If needed some of them which are bigger may need to get excised in Toto (Completely along with the sac)
Please take broad spectrum antibiotics along with anti inflammatory medication like Diclofenac
twice daily .
Get the prescription of medicines from your family Physician.
Ensure to clean your genitals with warm water twice daily.