Well, assuming the hyperinflationary case, which seems likely, yes 1 btc could be worth trillions of dollars, and then infinite (impossible to buy btc for usd).

But I think you probably mean "in today's dollars." That put's btc at $100M. Assuming btc reserve currency status with 18M unlost btc, that calculates to a global wealth of $1.8 quadrillion. Seems too high. I think global wealth estimates around $500 trillion are more realistic. Which puts btc around $25M?