I use a damp micro fibre cloth to remove soap scum and then a damp glass cleaning cloth to dry. Once a week. But it depends how much soap you leave, I rinse off soap at end of shower

Train the users of the shower to wipe the screen down after every shower. Using either a simple window squeegee or a micro fibre cloth.

If the shower screen is older, then give it a good clean with Gumption, all purpose cleanser or similar product with a microfibre cloth.

Then Wipe shower screen with vinegar, then rub over with a few drops of sweet almond oil placed on a microfibre cloth or rolled-up pair of pantyhose. This helps to reduce what looks like soap scum but is usually glass corrosion.

Then wipe the shower screen down after every shower, with a squeegee.

This will then reduce having to spend a great deal of time cleaning the screen, when cleaning the bathroom.

Try Barkeepers Friend.

My solution is to avoid glass altogether around showers. I honestly don't understand why people see it as necessary. A walk-in shower with closed walls and just an opening for entry/exit takes a little more space but is so much more practical. I love the new wet room bathroom with shower next to the bath and the vanity and toilet in a separate area. No need for glass as there's nowhere for water to go where it causes problems. Makes such good sense! Also love the currently popular ensuite design of a long vanity open to the bedroom with shower and toilet occupying half each of the long space behind the vanity and door to toilet at one end and opening to shower at the other.

If you must have glass screens, consider frosted or painted glass or slumped acrylic. Patterned screens don't show smears and are therefore far easier to maintain.

There's a product you can treat your shower screen with which defintely helps.

We've used it on every new shower screen we've installed. You can use it on old ones too, you just have to clean it with the special stuff when it's old, and you are supposed to treat your screen again when you noticed the water isn't beading like the product intends. It's called enduro shield home Glass Treatment for showers and more - if you google that you'll find a heap of stuff comes up.

Give your shower glass a good clean, I use the shower double sided cloths from the supermarket, once rinsed after every shower I spray with windex Shower, it cleans the glass between showers, saves a lot of time and it dries sparkling

Precisely why I struggle to understand why on earth people persist in designing showers with lots of glass around them, when simply allowing a tiny bit more space to make an alcove shower (or creating a wet room) eliminates the need for glass completely and makes cleaning a dream. Who wants to get out of the shower all fresh and ready to dress for an outing but have to get sweaty again squeegeeing the shower? it's nuts!

The house we purchased has two huge showers fully enclosed with glass and i can't wait to replace it with Wetwall sheeting that eliminates both tedious glass cleaning and grubby grout. Hopefully the new design will incorporate a solid stone base also, to eliminate grubby grout lines on the floor. Smart designers can prioritize easy cleaning when designing a bathroom and still make it gorgeous. But far too many builders stick with the conventional and don't think about maintenance at all.