What type of bond would be formed if dyz orbitals overlap along the z axis?
Before I answer the question, you should understand that - since everything is symmetric - the answer would be the same if we took two $\ce{d_{yz}}$ orbitals along the x-axis, two $\ce{d_{xy}}$ orbitals along the y-axis, etc.

Have a look at this snippet I picked from Wikipedia Commons (by Jeremy77, public domain):



Here you can see the overlap of two $\ce{d_{xy}}$ orbitals along the y-axis constructively (in the same phase). There are four lobes overlapping, which would lead to a total of two nodal planes. Such a bond is a speciality of $\ce{d}$ orbitals and it is called the delta ($\delta$) bond.

Now, can you understand what the answer to your question would be?



See also: Which d orbitals can form Sigma, Pi, Delta bonds?