Error trying to import a component from another folder (react - native)

If you want to create functional component - you need to create it smth like this:

import React from "react";
import { View, Text } from "react-native";

const TextComponent = () => {
  return (
    <Text>Hello</Text>
  );
};

export default TextComponent

You should read about difference between function/class components/functional components.

Start from here: https://reactnative.dev/docs/view

You haven't specified your function name, so change your comp1.js function likewise :

const C1 = () => {
  return (
    <Text>Hello</Text>
  );
};

export default C1;