Many times an event listed under the question mark will have to be done several times to be marked complete as the story advances each time you try. Some events have preconditions requiring a high enough comfort, a higher level, or that another event has already been done. Sometimes it will mark the event under that time as complete, which makes a new event with the same time and location appear.
Because each episode is not linear, those who post what bookmark they are on cannot really be helped without a save file posted to determine what events they still need to do.
Use URM to look at what events still need to be done. It is in the events list:
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Use
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to translate the code files for the episode into a readable format. They are the RPYC files in the games folder that are the room names followed by the episode number, for example "bathroom20.rpyc", "beach20.rpyc", etc.
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As for increasing the level, it's normally tied to making dresses.