Used or fresh dryer sheets work wonders for soap scum — you’ll see it most on a glass shower door, but it’s also effective elsewhere, including any shower fixtures.
But otherwise, please don’t use dryer sheets! Towel manufacturers tell you not to use them because they mess with absorbency and I also think they are the main cause of fabrics eventually feeling waxy. I use a bit of vinegar in the fabric softener slot in my washing machine and I think that helps keep things soft.