Time travel is currently considered to be a hypothetical concept, and there is no scientific evidence or technology available to support its practical implementation.
The idea of time travel often raises questions and paradoxes, such as the grandfather paradox (where you go back in time and prevent your own birth) or the bootstrap paradox (where an object or information is created from an infinite loop with no clear origin). These paradoxes challenge our understanding of causality and the logical consistency of time travel.
While time travel remains purely speculative, it is uncertain what its consequences would be if it were to become possible. The impacts on time itself would depend on the nature of time travel and the underlying principles governing it. Speculations and fictional works have explored various theories, including the idea of altering timelines, creating parallel universes, or maintaining a self-consistent loop of events. However, until we have a comprehensive understanding of time and develop the means to manipulate it, the actual effects of time travel, including the possibility of destroying time, remain purely speculative.