Could i decorate cakes and sell them at home?

I live in usa is it elligal
Or legal idk neeed advice please

Check you local bylaws. Are you in a well populated area? Do you have an advertising plan?
What is your competition? What is your time available? Will you deliver? Bottom line: you might not become rich. Decide your immediate and long term goals. Good luck. If it's legal in your area, go for it with open eyes??