Hello im trying to open an account an deposit my deceased sons check im the representative for his estate its less than6,000 do i have to settle in pr

If that is all your son left, you may not need to go to court but you will need to file a Small Estate Affidavit, wait for the judge's signature and find a bank which will accept it.  In any event, we have had independent administrations in Texas since 1843.  Probate here is neither as expensive nor as time consuming as you may imagine.