I have converted from islam to christianty Can I apply for asylum? and if yes. what the persent of acceptance?

The most recent State Department report on religious freedom in Egypt appears to support your position that converting from Islam to Christianity could prove a basis for asylum: http://www.state.gov/j/drl/rls/irf/religiousfreedom/index.htm#wrapper However, you would be well-advised to consult an experienced immigration practitioner to consult with regarding your case. The asylum officer is likely to scrutinize the authenticity of your conversion to Christianity. If you file now while you are still in valid non-immigrant status, that would be a good idea (assuming that an attorney agrees that you have a valid basis to apply for asylum).