This is a community contribution.
Install MathWallet Chrome Extension
In [Settings]-[Networks], open: Binance Smart Chain – Testnet
Click Switch Network and select 'Binance Smart Chain – Testnet'
Click + button, create a new wallet address
Copy the wallet address, and you can get test token in link below:
Check the address in Bscscan whether the test BNB arrives
Open Remix IDE
In deploy tab, select Injected Web3, Remix will connect to the test wallet automatically