So I know this game is not cross platform between xbox to PS4 or PC but will the subscription cary over?
So lets say I by the game for my xbox friends and I get it on the PC for my cousins. I do not have a problem paying for 2 copies of the game but Will I have to pay 2 subscriptions?

no, ur cousins and ur friend will have to pay the sub after the first 30 days. lol

the game gives u 30 days of access, if u get it now, it gives u also 5 or 3 days early access and some benefits with the races...

Yes, a sub for every copy.

Or i guess i should say for every platform as now that i think about it, i don't know if i could have the same account on two PCs. I would guess yes, but i don't know for sure.

Oh didnt noticed that... yes, 1 is a PC copy and 1 is XBOX copy... XBOX release date is at june/july . PC copy release date is next week and if u pre order pc copy now, u get some bonus things

You can have the same account on two PCs, but you can only log into it on one at a time.

So each player needs an account, and that account is platform specific (though PC/Mac are considered one platform).