If the maker of the Will has died and a Probate proceeding opened, the Will is public record and you can see it at the clerks office.  Chancery Clerk of Court in Mississippi.

If there is a Will but it has not been probated, you can compel whoever has the Will to produce it for probate.  If they say they don’t have it and you know or can find an attorney who drafted it, you might be able to get a copy and probate it if requirements for same are met.

If the maker is not deceased, there is no way to see it.