CuSO4 refers to copper$II$ sulfate, Cu$OH$2 is copper$II$ hydroxide, CuO is copper$II$ oxide, and Cu refers to elemental copper. The reaction between these substances can be represented by the following equation:

CuSO4 + 2NaOH → Cu$OH$2 + Na2SO4
Cu$OH$2 → CuO + H2O
2CuO → 2Cu + O2

Therefore, the overall reaction is:
CuSO4 + 2NaOH → Cu + Na2SO4 + H2O + O2

This reaction results in the formation of elemental copper, sodium sulfate, water, and oxygen gas.