How bad is my acne scaring and what would be the best procedure to get rid of it? (Photo)

From the photo provided, there appear to be the full mix of the most common types of acne scars: boxcar, rolling scars and ice pick scars. There also appears to be some generalized acne-related facial acne atrophy in both the cheeks and temples.
For the generalized atrophy noted above, a Field Subcision can help to elevate and smooth each area. Remaining individual boxcar and rolling scars that still remain troublesome can then be treated by individual subcisions. Finally TCA CROSS can be used to treat ice pick scars and dilated pores.
Both subcisions and TCA CROSS typically requires a series of on average three to four treatment sessions spaced at a minimum of about a six week interval between sessions in order to achieve usually and realistically somewhere between a 60-80 percent overall improvement in appearance.
You would be wise to exercise a great deal of "buyer beware" when being offered aggressive treatments, such as deep peels, which risks scarring and dyspigmentation, or a host of expensive "bells and whistles" light and energy-based gizmos, since the hard science to support their use lags well behind the heavy marketing hype and social media buzz to promote them.
You would be wise to consult with an experienced, board certified cosmetic dermatologist scar treatment specialist. Hope this helps and best of luck. .