If u mean the personal amount of tc... yep, theyre limited, and i can confirm u this with a funneh experience...

Once upon a time, there was a hacker that sent me 100'000,000 tc, i dunno why (anyway hanzo confiscate the stolen tc)....



.... and the thing is that ingame, it only displays those tc as 99'999,999 so we can deduce that this is the limit, heh.