I need some sound advice on how to deal with heavy mould?

About eight days ago a neighbor upstairs left a tap running on full force for around 6 hours. The result was a lot of water damaged occurred to my own apartment. Part of the water damage wet my bedroom cupboard. My current worry is that very quickly mould or mildew? (Not sure of the difference) has started to grow alongside the damp parts. The patches where the mildew is growing appear to be damp still. When I did a search on how to halt the growth of it, it seems to be a serious affair. I feel now, afraid to “disturb” the mildew.

My question then is, is it better to leave it be, until insurance pays out, when cupboard is replaced? Or can I at least halt the growth and possible allergic reactions to the spores. I have purchased bleach, gloves, and vinegar. I was thinking of “spraying” the mildew to kill it? At least. With a mixture of say vinegar and water?

It has already started to “attack” a few garments which I have had to throw away. I obviously cannot throw away all my clothes. Should I was them in vinegar. Any help or suggestions appreciated.