Hi ! You can ask your dermatologist about procedural treatments available for acne and the marks it leaves behind .Simple treatments like chemical peels can be done with good improvement . I hope this helps !
Next Steps
Start by using a doctor prescribed sunscreen with an SPF of atleast 30 .The sunscreen should be applied once in 3 hours especially between 7am-5pm,the first application should ideally be used 20 minutes before you step out into the sun.