Need help to steam?

Can I if I bought a game of steam on a stand pc and I later so jz nen laptop zulege the games I have s.pc also play on the lsptop when I sign up with the same data at Steam or I have the gamen dan to buy extra with my laptop?

No, you can play the game on the laptop.

All games are tied to the account, not to the PC.

The purchase is tied to your Steam account. As long as you have your access data, you can do reinstallations over and over again on any device or use installations on multiple devices in parallel.

Many games now sync their settings and game scores via the cloud, so you can easily switch between devices and continue playing.