Acne at your age are very common.
Don't worry regarding the same. Start applying clindamycin cream in the day and benzoyl peroxide in the evening for the same along with doxycycline capsules 100 mg twice daily and you will be all fine wishing 10 days.
For scars you have visit a dermatologist as there are many treatments available for the same
Next Steps
Start medications and once all lesions have dried up meet a dermatologist
Health Tips
Don't use oily foods or any cosmetics