If you want to send funds from another platform or you need to receive an incoming transfer to your wallet, you need to know your wallet address.
Open Guarda Wallet app, find the wallet you need in the list of wallets.
You can filter your wallets and find the one you need, just enter the wallet name in the search bar.
Open your wallet and you'll see the address. You can copy your address to the clipboard, send it using the "share" feature or open it as QR code.
All incoming transactions at this address can be found in the "History" tab.
Also read How to exchange your crypto.