As far as the structure goes, the shape of the building does in-fact resemble the shape of a traditional bank in games. Most banks in the real world look like normal buildings but, thats probably too much abstraction for what you’re trying to accomplish.
The bank sign is a bit too large for the size of the building and if you’re lazy like me and hate to read long words while you’re trying to vibe, a nice green money symbol should do the trick.
The massive dark grey bit which is supposed to replicate the vault is way too big and it might be better to place it underground. Speaking of underground, you should probably look into adding landscape and such to replicate the feel of your bank.
The interior is basic but, you don’t have any bankers anywhere. You have a bunch of secret service agents trying to pop a man and when he finally reaches inside, he’s going to be greeted by a fountain and rows of people that lead to nowhere. Imagine that. You get past James Bond and his homies only to find a fountain and an endless line of people going nowhere. Shoutout Javier from Red Dead 2. T’was a good man.
The actual vault looks decent but, the lasers should only be activated if the player is in a region that’s restricted. Otherwise, it looks like some sort of techno-union droid facility from star wars and honestly, we can’t support the confederacy. Not like this.
I must say, the money is very neat. Very easy to steal. I’m not sure how the money goes there in the first place but, if that sewer drain is the key to stolen goods, I guess that’s cool. You should make it more vaulty with a door that you need to access and a retinal scanner to be overly excessive but, epic at the same time.
As for the floor, I’d prefer a nice classy texture like hardwood or even tile to replicate what you’re going for. Try to modernize it a bit to fit.
All-in-all, this is a nice start. My first building was a castle and I actually lost it because of a windows 7 forced restart. Always save your stuff. Use references and create your own. Don’t give up. You’ll learn a lot of useful skills along the way. Best of luck and I hope this helps.