Why do I need the sch of credit schedule a and schedule j forms what are they? and why are they available ?and when will they be available?

It depends if you will need to use Schedule A and Schedule J. Attached is a copy of the Schedule A form that shows expenses for taxes, medical expenses, mortgage interest and other items. This may be beneficial for your tax situation. Schedule A 

Schedule J can be beneficial for farmers and other businesses by averaging income and calculating a lower tax than regular tax. Schedule J Information

Schedule J has not been released by the IRS. See the link for the availability of forms:  Forms Availability