If is a smaller amount and within reach , I use a Mr eraser ! I used it on the side of my house ! It worked great !
White cleaning vinegar will kill the spores. Then pressure wash.
Pamela's advice is right on. Mr. Clean Magic Eraser will do the trick.
As in a shower curtain? Take it down and wash it in your clothes washer with some bleach.
Depends what the vinyl is being used for, but either bleach or baking soda and vinegar