App.js

import { StatusBar } from 'expo-status-bar';
import { StyleSheet, View } from 'react-native';
import { NavigationContainer } from '@react-navigation/native';
import { createStackNavigator } from '@react-navigation/stack';
import SignForm from './components/SignForm';
import Home from './components/Home';

const Stack = createStackNavigator();

function HomeScreen() {
  return (
    <View style={styles.container}>
      <StatusBar style="auto" />
      <Home />
    </View>
  );
}

export default function App() {
  return (
   <NavigationContainer>
      <Stack.Navigator initialRouteName="Home">
        <Stack.Screen name="Home" component={Home} />
        <Stack.Screen name="HomeScreen" component={HomeScreen} />
        <Stack.Screen name="SignForm" component={SignForm} />
      </Stack.Navigator>
    </NavigationContainer>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    paddingTop: 20,
    flexDirection:'column',
    backgroundColor: '#fff',
    justifyContent: 'center',
  },
});