Hello guys, i need a help regarding retrieving data in array

here is the problem

we are asked to get id number, name and section and put it in a array
and then if we clicked retrieve button it will prompt an inputbox requesting for the id number of students and after we input the id number of the student the name and section will be in the msgbox

im having a really hard time in array so I hope someone will help me with this, thank you :))