There is no official Windows 7 Service Pack 3 (SP3) or Service Pack 2 (SP2) from Microsoft. Microsoft officially released only one service pack for Windows 7, known as Service Pack 1 (SP1).
Here is a helpful guide on what you actually need to download, how to get it, and how to ensure your system is fully updated. windows 7 service pack 3 download 64-bit
In 2016, Microsoft released a Convenience Rollup (KB3125574). This single file contains almost all the security and non-security updates released after SP1 through April 2016. There is no official Windows 7 Service Pack
The download bar filled with unnatural speed. 10%. 40%. 90%. Done. No security warning. No SmartScreen filter. Just a polite chime and a dialog box that said: “Windows 7 Service Pack 3 (64-bit) is ready to install. Important: This update cannot be uninstalled. Continue?” You will not receive new security patches
No. Microsoft officially ended support for Windows 7 on January 14, 2020, and the last official service pack released was Windows 7 Service Pack 1 (SP1) back in 2011. There is no Service Pack 2 or Service Pack 3 from Microsoft.