How can I use ma Apple ID to buy something at the store

Your question as it stands is pretty broad.

Which of the various stores Apple has?

How do you intend to pay? Personal account balance? Card?

This document outlines what you can buy with your Apple ID [Apple Account] balance --> What you can buy with your Apple Gift Card or Apple Account balance - Apple Support

Read the links below about various ways to pay for items in the iTunes and App Stores.

- Add a payment method to your account. See this article about payment methods that you can use with your Apple ID --> Payment methods that you can use with your Apple ID - Apple Support then see this article about how to add a payment method to your Apple ID --> Add a payment method to your Apple ID - Apple Support

- Add money to your Apple ID balance - "Use a payment method, such as a credit or debit card, to add funds to your Apple ID balance." This takes the previous payment method one step farther by optionally using it to irreversibly add funds to an Apple ID account balance instead of having the card charged each time.

Click here --> Add money to your Apple Account balance - Apple Support

- This article outlines how to redeem an Apple Gift Card or App Store & iTunes gift card --> How to redeem your Apple Gift Card or App Store & iTunes gift card - Apple Support

Aguilar1980 wrote:

How do I transfer my money from Apple ID to my Apple Cash

Normally once funds are in Apple Account balance the only way to get them out again is to spend them.

From: Check your Apple ID balance - Check your Apple Account balance - Apple Support -->

"About unused Apple ID balance

You can't redeem or return Apple Gift Cards, App Store & iTunes Gift Cards, or unused Apple ID balance for cash, except as required by law. If your jurisdiction allows for refund of redeemed gift balances, you can contact Apple Support." Read the support article for more details.

The above excerpt only mentions balances from gift cards as being eligible for refunding, and only in limited places where laws may require that. Read the support article for more details.