56.35 only does not mean anything. If it's 56.35 ng/dl, then it's normal for you as a female. If it's your husband's report then it's very low. You should consult whoever have advised you to test this. Checking
Testosterone alone cannot help much in finding the cause of your infertility. I'm sure the doctor must have advised many other things for you. It's a complex problem and needs a detailed evaluation.
Next Steps
Check the unit of the value. And consult Gynecologist for other causes of Infertility.