I can't install thw 2K25 NBA at my XBOX SERIES ONE S

There is no such thing as a series one S, do you have a one S or a series S? If it has a disc Drive it's a one S

If you purchase the Xbox one version it will work on both systems, but the series version will work on series

Unfortunately since you bought the code from a third-party retailer no refunds are available, and since you redeemed the code it's unlikely Amazon would refund you because they can't take it back

The Series version is playable on the cloud via GamePass Ultimate

you almost certainly have an Xbox one S, if it has a disc drive you have a one. The letter is not the important part it's series or one with series being faster

The standard edition includes both versions, you need to download the Xbox one version

https://www.xbox.com/en-US/games/store/nba-2k25-for-xbox-one/9N9W42TW36FS/0010

I bought NBA 2k23 on my Xbox One S I want to buy a Xbox Series S but can I still play 2k23 without buying it again?

Xbox One S (All Digital)

NBA 2k24 for Xbox One. The Mamba Edition also includes both the One and Series S/X versions.

I installed them on my old xbox one and transferred them to the external hard drive so I know they are on the hard drive

All my installed games appear correctly as installed on my Xbox one if I connect the hard drive to it. But when I connect the hard drive to my Series S, most of the installed games appear but about 9 of them do not. The missing games appear as ready to install on my Series S