Hello,
These acne may be because of the hormonal changes which is quite common at this age.
Next Steps
U should consult dermatologist or cosmetologist . Have a thorough consultation for acne.
Health Tips
Also improve your diet which includes lots of salads and fruits.
Also avoid junks
Drink plenty of water.
Wash ur face atleast 3-4 times in a day with a mild cleanser. And most important don't pick ur acne or scabs.