How to add a gradient

Hi there,

Thanks for reaching out. In addition to the response given by Mike, I'd suggest you to check out this help article(https://helpx.adobe.com/in/illustrator/how-to/color-gradients.html) to learn about color gradients.

Hope it helps.

Regards,

Ashutosh

Click fill with gradient to add the default black to white, you can then edit in the gradient palette, or in swatches flyout load one of the gradient swatches.

It may be useful to add an image and a descripton of what did not work for you since most of us are not clairvoyant.