[notsofastbuddy]

Exactly 0.00 can also mean that the engine has no idea what's going on.

[ganeshkrishnan]

Err...sorry no. At least not for Stockfish (maybe for AlphaZero or LeelaZero).

0 means that the position is exactly equal (material + positional)

The engine always has an idea of what's going on through simple material calculation + positional heuristics (although it maybe be flawed)