In the Name of Allah, Most Gracious, Most Merciful.
All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
In this fatwa:
It is permissible for the one who is the head of the household to take that money of the COVID-19 stimulus cheque and use it on the needs of the house as per the usual agreements.
Sheikh Abu Eesa Niamatullah answers your question in this video:
Almighty Allah knows best.