Hi James, and welcome to Wikitree!
Unfortunately, Wikitree is not a place to find DNA matches, because raw DNA does not get uploaded here. Instead, you need to go to the DNA service where you where originally tested (ancestry.com, FamilyTree DNA, MyHeritage, or 23andMe) or upload your raw DNA data to one of the other services or GedMatch.com to find matches.
The DNA information here on Wikitree merely serves as a guide for potential matches that you might want to look for on those other services.