It's not a bluetooth device and it is useless without the receiver. Matching mouse does not have to be used with the kb so use any mouse wired or wireless. You should donate or recycle the keyboard. It is for older windows versions. No windows 10 drivers or software available. It will work as a basic KB if you can find the receiver but not well and with no added features. All keyboards are plug and play which means you can type on it.
https://www.microsoft.com/accessories/en-us/d/natural-ergonomic-desktop-7000