I have a science question?

Nothing will happen as the water level does not change when floating ice melts. Ice floats because it is less dense (0.9 gm/cc) at 0°C than water (1 gm/cc) with a proportion of its surface below water level as to displace its own weight in water. When ice melts, water produced by the ice will exactly fill the original volume that the frozen water has displaced. The floating ice is already displacing a volume of water equivalent to its mass, therefore no change in level.