Looks like sun damage to me. Or is it something else?
It might be sun damage if its been in full, hot sun all day for a while, but otherwise, there's some kind of white insect on it, and white fluffy deposits. Check backs of leaves and woody parts, because it might be scale insect infestation; also check the white deposits with a magnifying glass. Treat for scale/mealybug if its that - you can wipe off the fluffy white bits with a cloth, but any hard scale attached to stems will need a little rubbing alcohol on a cotton bud or a cloth to get them off. Neem oil spray also controls scale.