It means "I hope you have a great time"
j'ai beaucoup de temps, chérie means 'I have lots of time, darling'.
combien de temps avez-vous été en Amérique ? means 'how long have you been in America?' in French.
This is a poor and automated translation, meaning "I hope you have an amazing day with your baby brother"
beaucoup means a lot / lots in French.
Ils / elles parlent beaucoup mean 'they speak a lot' in French.
Do you have? Avez-vous une voiture? Do you have a car?
J'aime beaucoup means "I love a lot".
you have
beaucoup
I study a lot, though I don't study all the time.
It means "He is rich; he has a lot of money" It does not mean"there is a lot of money"; that would be "il y a beaucoup d'argent."
"j'ai beaucoup de bonbons" means "I have lots of candies"