How many calories do i have to eat to lose weight?

I’m going to hire a trainer soon so i’ll start exercising next week. However, i dont know how many calories i should be eating. I’m 24, 5’3ft and weigh 150lbs. My target weight is 120-130. My frame is not to be superskinny girl. I guess i’d be more curvy bc of my bone density.
yes that’s what i meant. Sorry, i just woke up lol