Home Covid test kit

My poor toddler has been unwell with a fever for a few days. We’ve been self isolating but haven’t been able to get a Covid test without travelling 70+ miles away!!! I mean really? Whose going to travel 140+ mile round journey with a sick baby?!!!! Anyway...., finally managed to get a home kit booked in after constantly checking online for two days. Ive managed to order it today - I was just wondering how long it takes before it arrives here? We are all self isolating until we get results but there was no clue in the email about how long we’ll be waiting before we receive it.