You can send a customer a receipt of payment via your Stripe dashboard. To do this follow the steps below;

1. Log in to your Stripe dashboard
2. Go 'Payments'
3.  Locate the payment to receive a receipt.
4. Click the  'Send Receipt' button.

You can also opt for automatic receipts to be sent upon any completed transaction.

To do this; 

1. Log in to your Stripe dashboard
2. Go to 'Business Settings' > 'Customer Emails'

        3.  Toggle on automatic emails for your chosen transaction types

        4.  Click 'Save'

Some further information from the Stripe website here -> https://stripe.com/docs/dashboard/receipts