I wanted to download Armory because I wanted to sell a bit of my BTC which I have a paper backup.
The problem is MacOS 11.4 system on which I can't download Armory and BitcoinCore. I am very new in crypto.
Are you able to tell me how to restore my BTC in that case?
Install Armory on another PC (or a virtual machine) and import your paper backup over there. That's the only real option for now. I'm not going to touch the build system until 0.97 stabilizes.