On Mac's keywboard we can easily find out every symbole but ° symbol. Normaly people have to search it on google and copy paste it. But don't worry here I will tell you some easy ways to type Degree Symbol
Option + 0 (zero)
There are other approaches, but I will here offer the simplest one that I always use. Emojisvilla gives you details about each sign as well as copies of the symbols so you can paste them wherever you choose.