Mini hoop score keeper

#include <Grove_4Digit_Display.h>
#include <cmath>


// Include Particle Device OS APIs
#include "Particle.h"


#define CLK D2//pins definitions for TM1637 and can be changed to other ports
#define DIO D3

TM1637 tm1637(CLK,DIO);

// Let Device OS manage the connection to the Particle Cloud
SYSTEM_MODE(AUTOMATIC);

// Show system, cloud connectivity, and application logs over USB
// View logs with CLI using 'particle serial monitor --follow'
SerialLogHandler logHandler(LOG_LEVEL_INFO);
int sensorPin = A0;
int sensorVal = 0;
int score = 0;
int rem = 0;
float display =0;
float display2 = 0;
float display3 =0;



// setup() runs once, when the device is first turned on
void setup() {
    Serial.println(9600);
    tm1637.init();
    tm1637.set(BRIGHT_TYPICAL);//BRIGHT_TYPICAL = 2,BRIGHT_DARKEST = 0,BRIGHTEST = 7;
    tm1637.point(POINT_OFF);
}


void loop() {
    sensorVal = analogRead(sensorPin);
    
    if(sensorVal <= 100){
        score += 1;
        delay(400);
    }
    
    if(score <= 9){
        tm1637.display(0,0);
        tm1637.display(1,0);
        tm1637.display(2,0);
        tm1637.display(3, score);
    }
    
    if(score >= 10 && score <=99){
        rem = score % 10;
        display = score / 10; 
        display = floor(display);
        tm1637.display(0,0);
        tm1637.display(1,0);
        tm1637.display(2, display);
        tm1637.display(3, rem);
        
    }
    
    if(score >= 100 && score <=999){
        rem = score % 10;
        display = score / 100;
        display2 = score % 100;
        display2 = display2 / 10;
        display2 = floor(display2);
        display = floor(display);
        tm1637.display(0,0);
        tm1637.display(1, display);
        tm1637.display(2, display2);
        tm1637.display(3, rem);
    }
    
    if(score >= 1000 && score <= 9999){
        rem = score % 10;
        display = score / 1000;
        display = floor(display);
        display2 = score % 1000;
        display2 = display2 / 100;
        display2 = floor(display2);
        display3 = score % 100;
        display3 = display3 / 10;
        display3 = floor(display3);
        tm1637.display(0, display);
        tm1637.display(1, display2);
        tm1637.display(2, display3);
        tm1637.display(3, rem);
    }

    Serial.println(score);
    delay(50);
}