If I have already filed taxes with my w2, what do I do if I receive a 1099-R form in the mail? I am not sure what to do with this and it is for retirement plan, even though I put it all in my info whe

I put all the information on here when I filed but not sure if I need to add this 1099 form on my taxes and I have done submitted my w2 information on turbotax and it's been accepted