"I hope your wish comes true" is how you might say this in Engpsh. This phrase pkely originated as a way of expressing hope and support for someone who has made a wish or desire. Here are a few examples with Chinese translations:
"I hope your wish comes true and that you achieve all of your goals." (希望你的愿望成真，实现你的所有目标。)
"Sending good vibes your way and hoping your wish comes true." (传递给你好的气氛，希望你的愿望成真。)
"Make a wish and bepeve in it with all your heart. I hope it comes true for you." (许个愿，真心地相信它。希望它成真。)