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This article will help determine if it's still alive. If so, you may be able to place some type of support in the pot to help it remain upright. https://www.gardeningknowhow.com/plant-problems/environmental/how-to-tell-if-a-plant-is-dead-and-how-to-recover-an-almost-dead-plant.htm

The plant may be suffering from an iron deficiency. This commonly causes this kind of coloration on the leaves. This normally happens either when the plant is watered too much (including too much rain) and the nutrients get leeched away or if the pH is too high. It could also be attributed to stress if the plant was not properly acclimated when set outdoors.

It sounds like you may have a scale problem. This article will help: https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm

I would give the money plant a month or so to settle in before doing any pruning, just to let it get use to its new home. After that, this should be fine.

As for the rhododendron, it should not be turning yellow. How is the drainage where it is? If it is bad, it may be developing root rot. It may also have a fungus. As a precaution, treat the plant with a fungicide.

Money Tree, or Pachira aquatica needs to be pruned when it gets too tall. If your plant is 2.5 feet tall, prune the stems back to within 1-1.5" of the top of it's braid or twist. New stems will sprout out. You will find more information at the following site: http://www.guide-to-houseplants.com/money-tree-plant.html

Money plant is a common name for a few different plant species. I believe what you have is a Money Tree plant (Pachira aquatica). This article should help with its care: http://www.guide-to-houseplants.com/money-tree-plant.html