Patti: Lime Away works very well on shower tile that has build-up from many showers.
I like 'scurbbing bubbles' ... or you can make a paste of baking soda and vinegar ( it's going to be foamy ) and scrub with that -- but don't ever use an abrasive material -- tile has a 'glass' finish and minute scratches will eventually collect stains, crud and not be 'cleanable' ...
Hi Patti! Here are some ideas for you to clean your tile. Happy New Year to you!