What does "anyone's guess" mean?

Question

Ty

Answer 1

When people say "anyone's guess" it means that it's something no one really knows, so it's like any guess could be correct.

Here's the dictionary.com definition for 'anyone's guess:
Something that no one knows for sure, as in 'Will it rain next Sunday? That's anyone's guess.'

Similar to 'Your guess is as good as mine'

Answer 2

it means no one knows the answer, that anyone can guess the solution.