What does it means when your paper file is showing hep c virus ab 0.1 s/ co ratio 0.0 - 0.9 and what can you about it?

Probably negative. What I understand from your question is that normal value of hepatitis C antibody is between 0.0 to 0.9. If your level is 0.1, which meaning it is negative. This indicates you have never been exposed to hepatitis C virus.
Incomplete info. There is insufficient information to give an informed answer. You physician who has the full report should be contacted for explanation.
Likely Negative. Recommend seeing your physician to do additional tests that shows presence or absence of hepatitis virus in the blood. (hcv RNA quantitation).