I cannot create apple i.d

See -> How to create a new Apple ID

How to create a new Apple ID – Apple Support (UK)

👉Read again -> Related Article -> If you see a Could Not Create Apple ID or Could Not Set Up iCloud message

• If you still need to set up iCloud with this Apple ID, contact Apple Support for help. 

so that I can download other application

You are sign in here .  .  .  with your Apple ID & Password (?).

Your Apple ID is the personal account you use with all Apple products and services. It includes the email address and password you use to sign in, as well as the contact, payment, and security details that you use with Apple.

👉 You can’t merge multiple Apple ID accounts.

See -> If you can't make purchases or update apps, including free apps, you need to update your payment method or add a new one. 

If you create/use a new Apple ID, you will lose access to some of your data and the purchases made with your existing Apple ID. 

Create a new ID (if necessary)on another Apple device/computer and sign into iCloud using the same Apple ID on another Apple device/computer. You should then be able to sign in.

If you see a Could Not Create Apple ID or Could Not Set Up iCloud message.  *

The maximum number of free accounts have been activated    -

Apple ID - create a new.      *

Apple ID – Create       -

Or contact Apple ID Support.  See the Apple Support articles below for contact information.  

Apple ID - Official Apple Support.    -

Contact Apple for help with Apple ID account security - Apple Support.  * (Link doesn’t always load)  

Get Support     -   Work through the screens to get a chat option. You may have to pick a slightly different problem.

Apple Support schedule phone call.  -

Apple on Twitter