Your *whatever*-clause lacks a verb and is therefore ungrammatical:

**Whatever money in the world**, I wouldn't eat it. <sup>NO</sup>

Either of these would work:

> I wouldn't eat it, whatever you *offered* to pay me. 
>
> No matter what you offered to pay me, I wouldn't eat it.


With "no matter" you can also say:

> I wouldn't eat it, *no matter what!*

That is a kind of ellipsis where the missing verb phrase expresses the idea "no matter what [the condition or circumstances happened to be]"  or "no matter what [was happening]". It is a variety of BE ellipsis.  No matter what [BE].

> .... no matter what [the condition | circumstances happened to be]


**no matter what!** is synonymous with *under any circumstances*.

You could also say:

> I wouldn't eat it *for all the money in the world*.