Can you split ugc?

Bump cus flecks suks d1ck for zp

If you mean, can you redeem $10 on a $20 card, then yes, you can. You'll be given 'UCG Pixels', which is another virtual form of currency of the same value, and can be used at any later date, but can only be redeemed on the original purchase account/IGN.
Once you'e used your UGC on a game, it can only be used on that specific game, in that specific user account/IGN.

In short, you cannot share a UGC between accounts.

Hmm... UCG Pixel... good