If we consider a scenario where time travel is possible and you repeatedly travel back in time, meeting and bringing along your past self each time, there are a few potential interpretations:
Multiple timelines: One possibility is that each time you travel back in time and interact with your past self, a new timeline or parallel universe is created. In this case, each version of you would exist simultaneously in their respective timelines, but they would not be able to interact or coexist in the same universe.
Time loop: Another interpretation is that you create a time loop where the events repeat endlessly. In this scenario, you would continuously encounter and bring your past self along for the journey, resulting in an ever-increasing number of iterations of yourself. This situation would involve multiple versions of you existing simultaneously within the same timeline.
Consolidation of identities: Alternatively, if we assume that the timelines merge or converge somehow, it is conceivable that the past versions of yourself could merge with your present self, combining their experiences and memories into a single entity. In this case, rather than having multiple physical versions of you, there would be a single "composite" you with an accumulation of experiences from the various iterations.
The exact outcome depends on the theoretical framework of time travel being considered, and different interpretations exist in works of fiction. It's worth noting that time travel is a subject of speculation and debate, and we currently lack empirical evidence or scientific consensus on its practicality or consequences.