You may have already downloaded your script at the point of purchase, but an email with your receipt and download link was also sent automatically at the same time in case you weren’t in a position to download immediately. If you haven’t received this within a couple of minutes of your purchase (it is usually instant, but occasionally there can be a delay as it is rerouted from PayPal) remember to check your spam / junk file.
The emails are sent immediately using an automated system but unfortunately some email providers occasionally filter out automated emails assuming them to be spam, even before reaching the junk folder. It is rare for the email to not arrive at all but, whilst your own email provider is responsible for the blockage and I cannot therefore get an automated through to you, just contact me directly at firstname.lastname@example.org and I shall personally send the email that you require so as to avoid the issue of being wrongly considered spam!
Of course, I apologise in advance for the fact that you will have to wait for my reply, but I shall endeavour to respond immediately that I read your email, but always within no more than 48 hours.