The "See All" feature lets you track your Chinese learning progress at any time. Similar to a gas meter, the goal is to fill it up daily with time split towards reading texts, quizzing yourself, and listening to a text's respective audio. The following video explains "See All" in more detail:
At the start of the week, your Meter will be empty and look like this:
In the middle of a typical week of learning chinese, your meter should be slightly more full. The fullness of the meter will vary depending on if you dedicate an hour a day or multiple hours a day. Both a completely fine; the goal is to be consistent with your language learning.