Hello Ann, nice to meet you. Welcome to WikiTree!
This page should provide the information you seek:
https://www.wikitree.com/wiki/Special:DNATests
If you have any more questions along the way don't hesitate to ask.
Have a nice day :)
This page should provide the details on how to get your DNA information uploaded connected to WikiTree. https://www.wikitree.com/wiki/Special:DNATests
[edited in response to comment below]
JT, Thanks for the great answer. Just to clarify, on WikiTree you don't actually upload DNA test results, you just add information to your WikiTree profile about the DNA test you took.