How many skeins of yarn to buy?

Hi everyone, I’m currently becoming a tester for someone and I’m unsure of how many skeins of yarn to get for it. I’m thinking of doing a M or L size sweater haven’t decided on it yet but for those two options I wouldn’t know how much skeins to get. I need the help me pleaseeee!!! 🫶🏽

Hi everyone, I’m currently becoming a tester for someone and I’m unsure of how many skeins of yarn to get for it. I’m thinking of doing a M or L size sweater haven’t decided on it yet but for those two options I wouldn’t know how much skeins to get. I need the help me pleaseeee!!! 🫶🏽