My husband came here to the U.S and got deported back to Australia but hes a New Zealander citizenship, im a U S citizen, what should I do

More information is needed about why your husband was deported. Please keep in mind that the fact that his visa was valid does not necessarily mean he was authorized to stay in the United States. The visa allows him to enter the country but does not control his period of authorized stay. He is authorized to stay only until the date in his I-94. Even then he can be deported if he violated the terms of his admission. Assuming your spouse could return, you would start the process by filing a Form I-130.