Q.How can I save my Jade plant
I have a huge Jade plant that I watered on day with a lot of water and then put outside in the sun for hours. It’s now losing so many leaves and they all look wrinkly with slight brown color.

Certified GKH Gardening Expert
You will have to let it dry out almost completely, and keep it out of the sun. The only way for it to recover is to not let it get exposed to either of those conditions, or to at least acclimate it to the sun slowly. Most indoor varieties are a little more sensitive to full sun until they are acclimated properly, and slowly.
This article will help you to care for the plant: https://www.gardeningknowhow.com/houseplants/jade-plant/jade-plant-care.htm