will make this better with time - bare min for now to get you up and running hopefully
go to this link: https://www.apple.com/uk/shop/buy-iphone/iphone-15-pro/6.7-inch-display-256gb-natural-titanium (or equiv for the phone you want)
Go to this screen and use the network tab of inspect to grab the url when you search using your postcode
use this url in the script
create a telegram bot and it'll text you the postcode of the store that has stock, this may not be your nearest store
save the phone you want in your bag, and be ready to check out, this will save you time
when you get the notification, select pick up from store in your bag, and enter the postcode of the store the bot has texted you
i've made it easy so you can copy and paste from telegram