Qualitative will only tell you whether you tested positive or negative to HBsAg.Since you tested positive, you should see a doctor and do more tests to see whether you are acute or chronic, and to see whether you will need treatment. No-one can tell you just by a single number.
Thanks for replying,
There was no unit mentioned will check once again. Assuming it to be qualitative is 0.2 critical or trivial?
We need to know the unit. Most likely your test is qualitative and the number 0.2 is not related to the quantity of HBsAg in your blood.