Choose File > New. Once the new document window appears name the document then add width and height. Make sure that your document has large canvas.
Type your text using Bold and thick font than select the text choose Object > Expand.
Apply black and white gradient to the text. color code of black should be (C: 0%, M: 0%, Y:0%, K:100%).
NOTE: YOUR DOCUMENT COLOR MODE SHOULD BE IN CMYK.
Select the text choose Effect > Pixelate > Color halftone. See the below image for color halftone settings you can maximize the radius according to your text.
The text is in bitmap form. we have to convert it to vector. Select the text choose Object > Expand. After that go to Window > Image Trace. see the below image for image trace setting. Now expand the text.
Now, we only have the black text use gradient or solid color to make text more attractive.