I replaced starter n checked all fuses n relays there no crank but there is light on dash why is it not starting. I also need to replace battery but grabbed one out of a subaru. I also put jumpers on jag with subaru battery to a running trailblazer. When doing this I was able 2 see my mileage but wasn't able to see it with just subaru battery.

 

If you can't even see the mileage with the Jag battery, nor with the Jag battery removed then with the subaru battery (that is, how I decipher your text above), and with just a few X-mas lights visible on the display, my conclusion has to be that both of those batteries are dead as a Dodo. And if those 2 batteries are not just a little bit bad, bad seriously dead, I could easily imagine that not even connecting the X-Type with jumper-cables to a running car might help. And of course, if your jumper cables happen to be from the 2-Dollar shop (meaning: If they are not SERIOUSLY THICK COPPER CABLES) they are just decoration without any purpose. Of course, I cannot know, which cables you used, but this would explain it.

Of course there could also be more serious damage to the Jag, which doesn't make it start...

 

The battery out of subaru is brand new n a fraction of the size of the jaguar battery

 

The subaru battery is new n jumper cables are new n good and the subaru battery was fraction of size of jaguar battery

 

"Fraction of the size" tells me: It does not have much crank-power.
Cables "new and good" still does not tell me, if the cables have the required massively thick diameter.

So before you start swapping all kinds of parts on the Jag and if you intend to keep the Jag and you know that the Jag battery is dead:
Start with buying a new proper & suitable battery for the Jag and charge it before first use.