New to solidity, why is it not returning my integer?

Question

I recently started learning solidity, and have written a very basic contract, but it is not returning my integer and I am not sure why:

pragma solidity ^0.6.0;

contract SimpleStorage {

uint256 favouriteNumber; //This will get initialised as 0, as it is not specified

function store(uint256 _favouriteNumber) public {
    favouriteNumber = _favouriteNumber;

}

function retrieve() public view returns(uint256) {
    return favouriteNumber;
}

}

enter image description here

Answer 1

When you set the number on the textbox, you must to click over the orange button called store and after this operation you can click on the retrieve button.

Answer 2

When you add your value in store, there will be downward arrow, I think you are not clicking the transact button. I have tested your smart contract and it is perfectly fine. check the transact button.