I assume you're inquiring about how much a glass door might add to the resale value of condo, right? Not much by itself, but it's a nice upgrade if you're planning on doing more to the bathroom, such as new tiles, vanities, steam shower, etc..
As per value added, the glass door does look nicer as long as it is clean. It looks sharper and has more of a WOW factor. If it's dirty and the soap/water crud/scum are all over the glass, it can be quite an abhorent site. The shower current is a cheaper option and can be changed over time at a lower cost.
Personal preference. This isn't going to add or detract value from your condo. But find that my taller buyers hate glass doors over a tub if they have to duck to get into the shower. If glass goes all the way up in a stand-alone shower, that's another thing.