Yes. Generally, stores that sell music as downloads (like iTunes, Amazon Music and others) keep 30% of a sale (this is called the retail markup price). You keep 70% of a sale (this is called the wholesale price).
For stores that offer full-song streaming, there is a proportionate share worked out differently for every store. Monthly payouts for music streaming can vary each month.
Remember, TuneCore keeps NOTHING of your sales.