This will depend on the functions of the wallet from which the payment will be sent to you, as not all wallets are compatible with BBW. In most cases you will be able to receive transactions providing the following:
- Your On Chain address (starts with bc1)
- Creating a Lightning invoice (lnbc1)
- Use the LNURL address which uses a form of email address, (eg. usernameBBW@ln.bitcoinbeach.com).
You will not be able to receive transactions by username as it is exclusive for BBW users.