Moisture can condense on a cold container when it encounters warmer humid air. Check whether the bottle itself is leaking before treating the wet surface as evidence of a fridge drain fault.
What the observation tells you
A recently handled bottle can be wet outside while its cap and contents remain intact. The location of the water matters: a single container, a broad shelf puddle and water beneath drawers suggest different starting observations. Do not taste or smell liquid to identify it.
A useful next step
Wipe the accessible area and inspect the container safely. If water returns independently of that bottle, record the pattern and check the model's permitted care guidance.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.