If you talk about progress in the form of mining, you can indeed, as above reply suggested, use a blockexplorer like blockchain.info, (although i would suggest to use something like
https://btc.com/ https://blockchair.com, since blockchain.com doesn't support/index BC1 adresses. ( They're visible, but unclickable.)
If you're talking about the development of Bitcoin (Core), you can check out the github,
https://github.com/bitcoin/bitcoinSpecifically,
https://github.com/bitcoin/bips for major developments.
