How many and which games can i play on 1440p on Xbox one s?

The Xbox One S (which was released in 2016) is a 1080P console. Playing your games at 1440P on the last gen console isn't going to make them look better.

I have tried trouble shooting the resolution but the game it’s self looks pixelated playing at 1080p on a 1440p monitor when I play any game on the Xbox series s. but if I play the same game on the Xbox one x it plays at the native resolution at 1440p

Many thanks for your response but I'm afraid you are mistaken. HDMI 2.0 has always supported 1440p at 120hz. Even the article you sent says this.

"The HDMI 2.0 connector was previously featured on Xbox One X and Xbox One S, with bandwidth limitations locking content to 4K resolution at 60Hz, or 1440p at 120Hz"

So my question remains How do I get 1440p at 120Hz on the xbox series X with the huawei mateview gt34 monitor that is capable of supporing this?

Which xbox are you trying to connect with? The xbox one s and the x should be able to run 1440p at 120hz. They should be compatible with VRR also.

Many 1440p monitors can do it, I have tried HDR with it on Odyssey. HDR looked good, but overall it may not have looked as nice using the native 1440p. So the super sample is probably better right?

I have heard that the Xbox one S and X does supersample (renders in 4k and shrinks it for your display) so, in theory, yes, it should look better.