According to your discription i think it is grade 3 acne. Rule out the reason like menstrual history diet sleep fast food intake dandruff.
Next Steps
if all things are ok then start with tab azee thrice a week once daily like sat sun mon every week 4 wks deriva cms gel at night over pimple for 1/2an hr and actame face wash twice a day
Health Tips
if not improving again consult dermatologist for furthet treatment like isotret if required