Dent on aluminium frame?
This is only engineering judgement, not technical analysis: the damage does not appear particularly serious or significant at that location. As Daniel advises above, keep an eye on it for cracks developing. If you are just a "normal" everyday type user it could be OK for quite a while. The Al frame will eventually crack and fail, not necessarily at this location. If you are a strong hard core competitor, then you wouldn't even consider using it for highly demanding duties would you?