How to receive paypal payments and how to take out the amount in cash ?

The money will go into your Paypal account. You know it's there when you sign into Paypal and look at your account balance and see the money there.

Withdraw money

Withdraw money from your Paypal account by clicking the "Cash Out" button. You can have money sent to you in the form of a check or a prepaid debit card, or can be transferred to your linked bank account.