我们晚上七点见面(吧) wo3men wan3shang qi1 dian3 jian4mian ba. *the numbers represent the tone marks for the pinyin. *It should be "晚上" , meaning "evening/night" not "下午"(afternoon). Note that 晚上(the time period) comes before the actual time. *吧 here shows a suggestion and it's optional but I suggest you add it, as it sounds more friendlier as opposed to an order.

“晚上七点见。”

我们晚上7点见。

我们下午七点见吧。

我们晚上7点见吧~