How much is chateau e keme 1967 worth today?

Assuming the question is about the Sauternes Chateau Yquem, then the answer is around $1300 or more for a bottle in good condition, based on Wine Searcher.

With a bottle of this age, of course a lot depends on provenance

• where was such a bottle bought, stored etc. and the condition

itself - does it have the original label, it the level of wine in the bottle good enough, are there signs of seepage?

Of course, if the bottle has been lying in some attic and not in temperature-controlled storage, then it's worth a lot less.