Have to……
Should…..
Deber
I should go to the store.
I have to go to the store.
Debo ir a la tienda.
Debo ir a la tienda.
Have to …
Another way to say it without using Deber
I have to go to the store
Tener Que
Hay Que ( one or you — should / must / needs to )
Tengo que ir a la tienda.
Hay que ir a la tienda.
-One / You - must / should go to the store.
To owe
You owe me money
I owe you dinner.
Deber
Me debes dinero.
Te debo una cena.
In a bar or cafe, not in a restaurant, when you want to pay.
What do I owe you.
Cuánto le debo? (LA)
Or
Cuánto te debo? (Spain)