It will depend how much work is needed, and how much you are willing to do your exercises in between sessions! You should have a feeling from the first session as to whether massage therapy will work for you, and you should experience meaningful change, i.e: one that has an impact on your life, after three sessions. Longer-term, chronic issues typically take six sessions or more to resolve fully.
I will recommend a package of sessions depending on need. I offer a complimentary half-hour review (phone or face-to-face discussion) after three sessions, in the event that progress is not as fast as you would like. I consult with and refer you on to relevant professionals as appropriate to ensure you are getting the most effective treatment.