How can I remove soap scum from black tile?

Krud Kutter and a magic eraser is my go to

Lysol soap and scum remover in the blue trigger spray bottle is amazing with no smell.

White vinegar and blue Dawn 50:50 mix, spray and let sit.

I would recommend a powered scrubber for the long run.

Wet and forget shower will prevent build up

in the future. It will also clean eventually but would take a long time.

Here's a helpful how to: https://www.thespruce.com/how-to-remove-soap-scum-4137657 I've found when I'm really desperate a magic eraser works wonders in almost every application.

CLR or plain white vinegar will work. Is the tile glazed?

Raquel: I like Lime Away! Soak it on with a rag and then use a scrubbie!

I cleaned accumulated soap scum from a friend's newly purchased home with a well-watered SOS pad. Then rinse with warm water and a bit of vinegar. Made them like new.

Raquel...I would use a utility razor gently adding water as I did.

Comet on a scrubby and when your done use a squeegee

Here's how I remove soap scum: https://bachelorettepadflip.com/2017/03/01/how-to-get-rid-of-mold-mildew-in-a-shower/

https://www.hunker.com/13420552/how-to-clean-black-shower-tile