My sister is the executor and has been very secretive about the funds now I find out she's had the money but won't pay me said she will give me some

A Will has no legal effect until it is admitted to probate.  Check with the county probate clerk to make sure that it has been and that you are a beneficiary.  In many states a certain number of months (say, 15) after the executor has been appointed, a beneficiary is entitled to request an accounting.  If it is not produced within a certain number of days (say, 60), the beneficiary is entitled to petition the court to remove and replace the executor.