What should I do if I have not gotten my amended refund in over 12 weeks and there’s no information about my w2 on where’s my refund.

Do not expect quick results from amending. It can take four months or more for the IRS to process an amended return.  

You can watch for information here:

https://www.irs.gov/Filing/Individuals/Amended-Returns-(Form-1040-X)/Wheres-My-Amended-Return-1