You have already successfully added your AncestryDNA test to GEDmatch and successfully added your GEDmatch ID to WikiTree. Within 24 hours, your AncestryDNA information will automatically become associated with your relatives in WikiTree who are most likely to share some of your autosomal DNA.
You should select your gender in WikiTree. Otherwise WikiTree does not know how to properly associate your X chromosomes.
You should read and (if you agree) sign the WikiTree honor code https://www.wikitree.com/wiki/Space:How_To-Sign_the_Honor_Code Then add more of your ancestors in WikiTree and try to connect to your earlier ancestry already in WikiTree.