This should help: https://www.bobvila.com/articles/how-to-remove-soap-scum/
Get the works toot bowl cleaner, gloves and a green scrubby pad. Coat small spots n scrub. Rinse, move to next area and be sure you have good ventilation
Hot white vinegar and dawn will clean it. Let stand overnight if you can and rinse in the morning.
Kaboom or Scrubbing Bubbles.
I second scrubbing bubbles. I have only used it once to rid my shower of the nasty caked on soap residue from my son's 'make me pretty' junk that he uses. I then started using Wet and Forget once every two weeks and have not scrubbed the shower since. Hint, do not use it on the floor, it is slick. Ask me how I know, lol.
If you damaged the finish with a too strong clean solution, you can restore the shine 2 ways: Gel Gloss or get an auto wax (carnuba) and then buff it well.