Question about value from someone who knows only a little.

BitcoinBitcoin
$20,245.78
7.17%
12D Ago
self.Bitcoin
Asking because I have a relative with like .12 of a coin. How much is that compared to most people? I hear about owning a whole coin and stuff but never about like a tenth of a coin. I just wanna know if the stuff my family member is saying is true about being having like 100k in the future or even the crazy things like them becoming a millionaire