Polycyst kidney transplantation- got operated five days before, creatine is more than 3. Is this normal?

Maybe. For live donor transplants, more than 94% of the time the kidney works immediately resulting in a declining cr within 24 hrs. For those who receive a brain dead donor kidney, 3 of 10 will have a delay in kidney function lasting for a week or two if not longer. At the end of one year, more than 90% of all kidneys will be working well. A cr of 3 by itself means little early postoperatively.