Hello , I want to know how to use money in my Apple ID account to subscribes my iCloud account but ii couldn’t

If you are going to take out a subscription, you are required to have a payment method on file. Once you have the payment method on file, when the subscription payment is due, normally the funds in your account will be used before the payment method is charged.

Yes, is possible, read again -> Related Article -> How to redeem your Apple Gift Card or App Store & iTunes gift card

That amount will be add to your Apple ID balance as payment method: Add money to your Apple ID balance

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

See -> Check your Apple ID balance

Check your Apple ID balance – Apple Support (UK)

If you have add funds to your Apple ID balance, it would take about 1 to 3 business days.