My test has run a week and still says "in progress", when does it actually conclude?

My experiment has been live for exactly a week now and the status still reads "in progress". I am trying to work out whether that is expected or whether something is stuck on my end.

My reasoning is that a week should be enough time for a result, but I would rather understand what the tool is actually waiting for before I assume it is ready. What has to be true before I can trust the outcome