How do I this?

I'm making a horror game I want when I collect x number of items the game ends but how do I do that?

so you can collect items by overlapping or collide with object

and add x number into variable

example

im making variable for colloect itmes

variable - Collect_items

Player Collide with Candlestick , Add 1 to Collect_items

after that

in game have 10 Candles to collect

now

Compare Variable to 10

Collect_items = 10 , Set Game to Game Complete