Thank you! It's such a relief to know that I didn't loose anything. Well right now I still have 416 GB of space left. It says that it is 4 years behind and it should take around 5 days to complete synchronizing. How is it that I check my balance in Blockchair? Do I select bitcoin explorer?
Great - that'll be enough space at least.
As bob123 has mentioned above, you really just need to copy the address (that you sent the bitcoins to) into the search box on the explorer.
Once Bitcoin Core is up to date Armory will then need to process the data, which will take some time - not as long, but not fast either.
Again, as bob123 mentioned there are other, lightweight, wallets that don't require the entire bitcoin blockchain to be downloaded - there are pros and cons to either option but while Armory is excellent it is perhaps not the best choice for newbies and it can be finicky to get working for those unfamiliar with it.
Unless you chose a P2SH-P2PK address we can get your coins into another wallet reasonably easily. Up to you to decide, really.