Data Store size limit question

[Alexandru2201913 (axgam190)]

Hello there everyone! Thank you for clicking on my post and being kind enough to read!
I know that a single key has a 4MB limit, but I really need to ask about limits on DataStores themselves.

I have come across this on the Data Store Manager page in the creator hub. I wanted to ask a few stuff: Is that 120MB limit for the whole game or for a single DataStore?
I mean, if i use

local DataStoreService = game:GetService("DataStoreService") 
local DataStore = DataStoreService:GetDataStore("DataStore")

Is DataStoreService itself limited at 120MB or is DataStore limited at 120MB?
Also, I wanted to ask a bit about the algorithm of determining max DataStoreService/Datastore size.

When I made my game I noticed it was 100MB – does it then add 1MB per each UNIQUE user?

Thank you everyone who has read my post, I hope you all have an amazing day!

[lumizk (luz)]

For the entire experience: Standard Storage 100 MB + 1 MB * (Lifetime Players)

Datastores are a form of logical, not physical, division, and since they are shared across all servers, it makes sense that this applies to the whole game. [DataStores Access and Storage Updates]