Q.If I cut a Golden Euonymus down low to the ground, will it grow back.
My bushes have grown too large and I would like to cut them down low to the ground,but if I do they will have no leaves left. Will they come back again?

This is a common issue with Golden Euonymus, they can easily outgrow an area if not planned for.
If you have not maintained your shrubs regularly, you can prune back to low and basic framework. Since they bloom on old wood, this will limit any flowering.
https://www.gardeningknowhow.com/ornamental/shrubs/golden-euonymus/golden-euonymus-care.htm