How to pass value between components?

Question

Vue.js

There is a component, for example, during some action it adds numbers:

data:()=>({
  a:1,
  b:2,
  culc
}),
methods:{
  getNum(){
    return this.calc = this.a + this.b
  }
}

How can I then use the data that I return to calc in another component, how can I transfer it so that I can work with the value that I received from the outside?

Answer 1

Down the hierarchy - props.
Up the hierarchy - events.
That does not work?