Hi Ben,
Object Manger> Materials> Bake Texture.
Select the Ambient Occlusion option, then in the new options that will be added below the list, chose Weight map.
The quality of the results depends highly on the points in the object. In other words, the more even the points are, the higher the quality.
Screen-shot
https://www.amazon.com/clouddrive/share/siUoGEvemDN9G2FLR6LGZwiQKxgwhvZismpoWULekCQ
My best wishes, stay safe, stay healthy.