Don’t have any credit card now

Don’t have any credit card now

You can also use your Apple ID balance as payment method:

Add money to your Apple ID balance

Add money to your Apple ID balance – Apple Support (UK)

What you can buy with your Apple Gift Card or Apple ID balance

What you can buy with your Apple Gift Card or Apple ID balance – Apple Support (UK)

See also -> Payment methods you can use with your Apple ID

Payment methods you can use with your Apple ID – Apple Support (UK)

 How I’m I going to get credit card number now?

What do you mean?

Ask your Bank.

Or do you mean Apple Card or Apple Cash ?

If you don't have a credit card, then you can get a credit card number.

What are you trying to do exactly?