Resolves according to Snopes https://www.snopes.com/fact-check/harris-mcdonalds-college/ when they first publish a fact check rating that is not "Research in Progress"

If Snopes rates it as True or Mostly True, resolves YES. If False or Mostly False, resolves NO. If they rate it as Unproven, Unfounded, or Mixture resolves to Unknown. Other ratings should not be applicable as far as I know, if another rating is given then resolves to best judgement based on the prior criteria. See https://www.snopes.com/fact-check-ratings/

Harris Claims She Worked at McDonald's in College. Here's What We Know

The presidential candidate has repeatedly claimed the alleged work experience in an attempt to connect with low-wage workers.