You get yiur W-2 from your employer unless they make it available for import or on line. Ask your employer.
W-2's come from your employer, and they have until Jan. 31 to issue it. Some employers allow you to import the W-2 through the software, but for security reasons you still need information from the actual W-2 to import it. So waiting for your employer might be your only choice now. You might need to phone, email and/or snail mail an old employer to make sure they know where to send your W-2.