Hello CJ , nice to see you here, welcome. It looks to me as if your Ivy has leaf scorch. Usually this is caused by problems with watering. Hot sun on a newly planted specimen wouldn`t help it much either. I have had problems sometimes like this with small plants from the nursery that have been potted up with those little hairnet things wrapped around the root. Then the water doesn`t manage to get in there well enough.
if I were you I would investigate this by digging up your plant and taking all the compost away from the root to see what is happening there.
You need to make sure that lots of water soaks right through the roots to start with, and then stop watering to let the plant drain off. If you overwater the roots will not be able to get enough oxygen to them and the poor thing will drown.
Lets hope you can save it.....let us know