I did blood test and creatine kinase was very high, I think more than 1000. I am going to the gym 4, 5 days a week. Should I drink more water or?

Normal. Strenuous muscular exercise elevates the CK - this is NOT abnormal. Drinking water is certainly a healthy thing to do when you're sweating, but it will not have any effect on your CK. Don't worry about it. (A CK of 10,000 would be significant)