Based on the question and limited facts, this forum is not the place to deal with this type of question.
We have no access to any prior year information, current year information, entity type, business activity, method of accounting used in the past, etc.
Nothing can be done without that information.
Yep, I agree with @Anonymous_ in that you need to have a one on one with a professional who can review what you have, roll it forward, provide assistance for moving forward, etc.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
