In the image above, what the node do is, if Statue Count % 5 is 0 then it will return true for the condition.
all Multiplication of 5, if it is modulated by 5, will return 0. Example below:
5 % 5 = 0
10 % 5 = 0
15 % 5 = 0
…
905 % 5 = 0
7 % 5 = 2
OR another solution, You can also create a variable for the counter that will be increased by 1 when you collect statues, and if it 5, will start timer and else, and also reset the counter to 0 again.