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.
Hypothetically, How Fast Is Warp Speed? It Depends
Warp Drive Sketch
What is warp speed? - Quora
Can a spaceship travel at warp speed? - Quora
Warp factor, Memory Alpha
Star Trek: How Fast Warp Speed Is (& How It Compares To Hyperspace)
How fast is a warp drive? - Quora
warp - ダウンジャケット
Theoretically, is the warp drive faster than light? If so, how much? - Quora