If doing taxes for SSA do I need to put SSI anywhere on my taxes. I haven't seen a place for it yet?

No.   SSI does not get entered on a tax return.  Are you just preparing a tax return in order to get the stimulus check?  Do you have dependent children under the age of 17? 

 

 See this:

 

https://www.irs.gov/coronavirus/non-filers-enter-payment-info-here

 

https://home.treasury.gov/news/press-releases/sm967

No I have no dependent children

And yes for stimulus check.

No, Supplemental Security Income (SSI) does not get listed on your tax return.