Thanks for writing in, this question resonates with a lot of readers. I hope that your acne has improved and you experience less outbreaks now. It is important to minimise the occurrence of new pimples so that you do not have further scars.
As the resolution of your photo is limited, I can see brown marks as well as shallow scars, and enlarged pores on your face.
Do apply a non-oily sunscreen daily to minimise the brown marks, as excessive sun exposure can worsen the marks.
Topical retinoids such as tretinoin cream (to be prescribed by a doctor) can help to prevent new acne and improve the appearance of shallow scars.
As your scars do not appear to be deep, options such as chemical peels and laser resurfacing (fractional or non-fractional picosecond laser resurfacing) can help in collagen renewal and scar improvement.
Do visit a dermatologist for a proper assessment.