Mold found on basement wall

Need some of your options…
A friend of mine said he noticed a baseboard pop off the wall, so he took a closer look and noticed mold on the drywall. He removed the drywall and sent me the pics attached. He also mentioned that he was having troubles with his sump pump last year. I have not been able to actually visit the property but thought maybe you guys would have a few ideas.

As I understand it, if that is inside of a concrete basement wall the visqueen should be against the concrete because the moisture drys toward the inside on the basement in northern climates in winter… :smile:

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