If a Hyuga and an Uchiha had achild, would the child have a Sharingan? a Byakugan? both? neither?

it wouldnt be a rinnegan, and its highly unlikely to be a Tenseigan

What Happens To The Offspring of a Sharingan And Byakugan user? - The RamenSwag

If Sarada and Boruto got married, would their child get both Sharingan and Byakugan together?

The RamenSwag
@neverused well that settles it, thanks!
@Mobile_dom it's a good question