For the treatment of acne, there are many different topical creams, oral tablets and machine based therapies such as lasers that can be considered.
Different medications and treatments act on the different pathways that cause acne and sometimes a combination may be warranted.
For acne scars, treatment really depends on the type of acne scar that has formed. It could be as simple as a non-intensive pigment laser for acne scar pigment or something more intense for deeper scars such as subcision, skin resurfacing etc.
A consult with your doctor will be the first step in determining the most effective and suitable plan for your future treatments.