God bless you too. Old scar/shadow on the chest X-ray is quite common. So long as you have a certificate to state that you had full treatment for TB in the past from a qualified chest doctor, you should be able to travel and even work abroad.
The scar unfortunately will not go and there is no treatment for scars
in the lung. It is just about proof to state that you do not have TB bug anymore in your body. Skin test will not help, so don't do that if someone recommends. Once you have a job offer, you can obtain a certificate to say that you had so many months of treatment and you are disease free. Some parts of the world will possibly not accept due to poor understanding, but most western countries will do. Best wishes !