Spacetime as we know it is finite, and as such, there is a limit to the number of warp bubbles, or level of warp speed, one could theoretically reach.
How fast can we travel in space? Do we need warp drive technology to travel at certain speeds? - Quora
What is the difference between warp drive and hyperdrive? - Quora
What is the maximum speed of an Excelsior-class starship? - Quora
Faster-than-light - Wikipedia
Star Trek's warp speed travel would have tragic consequences
Star Trek Warp Speed
How fast is warp speed exactly? It seems too slow to function as it should, considering the amount of space involved. : r/DaystromInstitute
Warp Speed: The Hype of Hyperspace
Traveling the Multiverse: How We Could Really Visit Other Universes
Warp factor, Memory Alpha