Holiday in term time

I'm taking my son on a holiday during term time this June he is in reception (5 years old) this will be his first unauthorized absence. He has had some time off this year for illness though he is chronic asthmatic so his attendance over winter hasn't been fab but we've done our absolute best!!! My question is if anyone else has taken a child on holiday during term time how much did they get fined (if they did) he will miss a total of 5 days!!