Holey buckets! Your model is in tough shape. I’m not sure how you managed to let it get this far out of control but it definitely needs help.
Here are a few things I see.
First, you are using tags incorrectly. The pencil icon should always be left at Untagged. When I opened your file it was set to “Tag 1”. I ran an extension to untag the geometry. This is the result.
I was able to get your model to show on the screen. There appears to be a whole lot of unneeded stuff scattered all over the model space. I don’t know what really is needed, however.
Strangely you have things like a shower door that has 92 nested components some of which are themselves nested. It’s the "Glass Shower Doors component that has all the stuff scattered around the model space
You can see the amount of space that takes up in your model.
On the off chance you don’t really need that mess, I’ve deleted it. I also purged unused stuff from your model.
That reduced the file size by about 42% and makes it so Zoom Extents will zoom in on your model.
By the way, you have a number of reversed faces which you should take care of before you start adding materials.
It’s still a huge file. I’ll upload it and give you the link when it is finished.
Out of curiosity, is this for a client?