insatll node js command

npm init -y

npm install express mongoose bcryptjs jsonwebtoken dotenv nodemon

running server command node start or node index.js

sign up api path http://localhost:3000/api/users/register

login api path http://localhost:3000/api/users/login

add score api http://localhost:3000/api/scores/submit/:rollno

top score api http://localhost:3000/api/scores//top