Hello,
How to check the balance of my Monero wallet without connected my Ledger ? I can easily check my balance with my Ledger connected to any Monero app wallet. Can you help me please ?
You can do this by downloading the app of Ledger live, you can see your holdings through this app and get update to its current value from time to time.
Though of course if you are going to withdraw it, you'll have to connect your ledger. Deposit monitoring can also do, this is the most convenient way to monitor your holdings, aside from checking your address in the blockchain explorer.