Wasp nest in my house ?

Sarah

Ok I don’t know shit about bees , wasps & it’s also fall arnt these bitches support to go dormant or die or something ? Anyways I other day I see’s a black wasp it looks like a wasp except for it’s all black & I’m a single mom . I’m scared of bugs like genuinely petrified I called my brother he came and killed it . Now it’s a few days later there’s another one I know it’s not the same I seen the others corpse . So I’m wondering how these MF keep getting in & what the F I do to keep them out . Anyone have any helpful information?