unity 2D game for windows

build a 2 D unity game similar to this one:
https://drive.google.com/file/d/12psKO2u9eWDxg8yjlhCbjRXw16Y_VYnE/view?usp=sharing

consists of 8 boxes, user has to click on the box that changes its image (only 1 box at a time) then another box changes it image, and so on.. after the time is up, display how many boxes did the user click on

-there is a background image for the game
-The game will be 2 rounds
-each round to have a time limit
-after each round display how many boxes did the user click
-after the second round put the score for round 1 & round 2 side by side

simple animation when the box box is clicked

the game will be built for windows (.exe)

freelancer to provide the source code for unity version 2019.2.4f1 as i will need to change myself:
-background image
-boxes images (both idle & when changed)
-locations of the boxes

freelancer to guide me to be able to build the game by myself