Can I enter Other GCC countries? with bank default in UAE.?

As a case is pending, you may land up in trouble, but be on your guard. Seek the opinion of a good Lawyer. GCC countries are all linked now and any type of information can be cross-transferred. As you are out of UAE, they can even track you and get arrested. The best way is to settle the dues and clear the court case. As far as a court case is pending, you should be extra careful and do not leave anything to chance. Hope you will overcome your troubles, pray and do good to others - giving charity is the best at the time of trouble - giving a piece of bread of what you have.