Hi Lynette, on Wikitree you don't upload your raw DNA but you do add your test info. You can do that by going to the drop-down menu in the right-hand corner, clicking on Add, then on DNA Test Information, and go to that page. Scroll down to where you see Add New Test Information and select Ancestry DNA from the drop-down list. It will give you a field where you can add your ID.
Once you do that, you will see it in the list on the top of the DNA Tests page and on the profiles for your direct ancestors and close relatives for several generations.