There are different sides to the Bitcoin saga.
One is that Bitcoin will one day be a popular medium of exchange like fiat currency. Someday you will go to Walmart and buy stuff at the checkout with Bitcoin.
Another is that Bitcoin has intrinsic value itself, like gold or silver or company stock, and the value will rise and fall.
The most popular viewpoint and the one that generates excitement is that Bitcoin has intrinsic value.
https://buybitcoinworldwide.com/price/
Bitcoin has no intrinsic value. But that is its strength, and not any weakness, as its various other qualities, including its absolute scarcity, make it the ultimate store of value, noting that whilst BTC as an asset does not produce anything, it does as an asset, take considerable amount of effort to create, with a pre-defined cap on supply. (Fiat currency also has no intrinsic value by the way, with its only value derived from the value others are willing to attribute to it, only unlike BTC it can be infinitely printed - hence the increasing an unstoppable trend of converting fiat to BTC over time).
As for being a medium of exchange, it most definitely is one - that should be obvious. Indeed, globally, Bitcoin is already the most accepted universally accepted currency other than the USD). However, just like other stores of value (real estate, art, gold, etc), we don't typically use it for "day to day transactions", one reason being that it is still in an adoption phase and thus rapidly increasing in value over time (although unlike real estate, art, gold, etc it is easily usable in any amount, if wishing to do so.) Most people would use it to store value, given it is still rapidly appreciating, and then if needed, convert small amounts of the BTC into fiat to use at a country level. However over time, and especially as its rate of global adoption growth eventually slows, we may we see a lot more transactions on the 2nd layer Lightening Network. For those who now want to use it consistently for day to day to transactions, they just have a BTC backed Visa card which can then be used globally, anywhere where Visa cards are used for fiat transactions (which is what a number of my BTC global nomad friends do, or they can of course also use it anywhere Lightening payment are accepted).