Based on our current scientific understanding, there is no evidence to suggest that our universe has a physical wall or an end in the traditional sense. The prevailing cosmological models describe the universe as vast and potentially infinite.
The idea of a "wall" or an "end" often stems from a common misconception of picturing the universe as a finite object contained within something else. However, according to our current understanding, the universe is not believed to be enclosed within a larger structure. Instead, it is thought to be expanding and evolving on a large scale.
That being said, the exact nature of the universe, its boundaries (if any), and what lies beyond them remain open questions in cosmology. Speculations and theories exist, ranging from the possibility of a multiverse to higher-dimensional structures, but these ideas are still subjects of ongoing scientific investigation and debate. At present, we do not have definitive answers about what might exist beyond our observable universe, if anything.
It's important to recognize that our understanding of the universe continues to evolve as scientific research progresses. New discoveries and insights may provide us with a deeper understanding of the nature of our universe and its possible boundaries in the future.