what kind of intermol forces can be seen in this molecule CH3COOCH2C6H5

Question

is it only dispersion?

If you mean BETWEEN molecules, then the O of the carbonyl will be slightly negative and some hydrogen bonding could occur with another molecule. Remember a few nights ago you asked about polarity of this molecule and I gave you a site. That listed benzylacetate near the bottom in terms of polarity of the molecule. Of course other dipole attractions, temporary induced dipole attractions, and other may occur, too. I recommend you read about van der Waals forces for most, if not all, will apply here.