Yes, that is the whole point of Gold sequences. If $x$ and $y$ are a pair of preferred m-sequences of period $N$, then their periodic cross-correlation function is bounded. It also happens to be take on only three distinct values. The $N+2$ Gold sequences are
$$x,~~ y,~~ x\oplus y, ~~x\oplus Ty, ~~x\oplus y,~~ \cdots, ~~x \oplus T^{N-1}y$$
and the periodic cross-correlation function of any pair of (distinct) Gold sequences also takes on only the same three values as the periodic cross-correlation function of $x$ ad $y$ (and hence satisfies the same bound). See the paper "Cross-correlation properties of pseudorandom and related sequences," Proc. IEEE, vol.68, pp.593-619, May 1980 which I referred you to just yesterday.