ancestry dna services reproduce whiteness by erasing cultural and historical specificity. the idea that you can be "40% scottish" as a material thing is horse shit. if you did genealogical ancestry and found that your great grandparents migrated from glasgow after a local industry failed, that is actually material and locates you within history.
you should be very wary of these useless tokens of pseudo information
consider the following: you have the same ancestry percentages as another human. does this actually say anything about either of you? does it give us any truly airtight predictive information about how you behave as individuals? if not, then by purely scientific principles, it is worthless information. it only serves to cement the status of individuals within the category of whiteness, or more specifically, "nonblackness"