Sir my homeopathy dr says duchenne muscular dystrophy is curable with homeopathy should l trust him?

No: I have several colleagues, including some friends here, who use homeopathy. While I'll admit I don't understand it and suspect that it is largely the magic of the practitioner, I think you'll discover that (1) the relationship with the practitioner may make Junior feel better but won't cure him; (2) another ethical homeopath will admit the illness is not curable.