What is Address
A crypto address is a sequence of characters consisting of long and irregular numbers and letters embodying a cryptocurrency wallet. Almost like an e-mail address, web page, or real-life address, each crypto address is unique and distinctive and points out where coins or tokens are located on the blockchain.
Your crypto address corresponds to your wallet address and the storage location of your tokens or coins on the blockchain. So, your crypto wallets don't store your coins or tokens. It only records and displays transactions and balances for your convenience.
You can use a blockchain explorer to view the transactions in and outside an address. Also, all the blockchain addresses are public. So your balance is exposed to the public but without revealing your identity. The only exception is the blockchains based on privacy (eg. Monero and Grin).