As a business owner-what form do I need to file for myself--w-2?

Does business owner of llc file a w-2

A W2 is used to report salary and withholding paid to an employee. Did you list yourself as an employee drawing a periodic salary? If not, and you just took profits out of the business, I think you would reporting it as business profits.

An LLC is a BUSINESS entity, not a tax entity.

Unless it is specifically registered as a partnership or corporation, the LLC is a "disregarded entity", which means it is a sole proprietorship that submits Schedule C and SE on the owner's individual tax return.

Hence, no W-2 is needed.