BlueWallet no longer offers its own Lightning node, so the best trick I’ve found is to sign up for LightningTipBot on Telegram and then link it to Blue using the LNDhub QR code that it gives you.
The thing you need to get for Nostr is a Lightning Address (LNURL) that allows you to receive ⚡️ zaps to your profile.
Fortunately there’s like 10,000 people here who will help. 😁💜🤙