TL;DR

import { BarChart } from "react-native-gifted-charts";
        
const App = () => {
    const barData = [
        {value: 250, label: 'M'},
        {value: 500, label: 'T', frontColor: '#177AD5'},
        {value: 745, label: 'W', frontColor: '#177AD5'},
        {value: 320, label: 'T'},
        {value: 600, label: 'F', frontColor: '#177AD5'},
        {value: 256, label: 'S'},
        {value: 300, label: 'S'},
    ];
    return (
        <View>
            <BarChart
                barWidth={22}
                noOfSections={3}
                barBorderRadius={4}
                frontColor="lightgray"
                data={barData}
                yAxisThickness={0}
                xAxisThickness={0}
            />
        </View>
    );
};