Here is how you can create a free Apple ID:
1- Click on Utilities
2- Click on App Store
3- in the search bar, insert “SumUp Pos”
4- look for the SumUp Point of Sale app and click on GET
5- click on Create New Apple ID in case you don’t have one
6- Now you can insert all your personal data required
7- insert your mail, choose your password and click next
8- fill with all datas required and the secret questions
9- when asked about the payment/billing method, choose "None"
10- Apple services will send you a verification code
11- Insert the verification code you just received on email
12- continue and then...
13- press Get again
14- confirm download by clicking install
15- insert again your password if prompted
16- there you go!
17- choose your favourite policy about password pop-ups on the AppStore
18- when downloaded, you can notice the button “OPEN” close to SumUp POS icon
Please note that AppleID is free and not provided by SumUp, this procedure leads you to have an AppleID without any credit card records involved.