How do you add a gradient to a brush stroke?

I’m making a logo that has a brush stroke circle but I want it to have the gold gradient. Is there any way to apply the gradient to the brush stroke?

You can always expand the stroke or add another stroke of a gradient in the appearance panel

Once you make the stroke rasterize the layer then press ctrl and select layer and go to layer-add new fill layer choose gradient.

or you can add the gradient to the swatches panel and then apply it to the stroke

For a logo, I would leave it a solid color.
Looks really nice by the way.