think this is a Spiraea Japonica
I would like to know if i can take a cutting from this and grow another one?
how would i go about this
You need a semi ripe shoot which has not flowered. Semi ripe is something that is not soft and sappy, but not hard and brown either. It comes with practice. Try taking three or four cuttings , once a week for the next four weeks. Water the plant well the night before. Take a 3 inch side shoot, trim beneath a node as usual, dip in hormone root powder, and put all three or four , spaced to the edges of a 7cm pot of cuttings compost or MPC mixed with perlite or grit. Water well to settle and let it drain. If you have a big dome propagator or cut off 2l pop bottle, that makes a good one pot propagator. Do not keep in bright sunshine, a bit of shade is good. They should root in four to five weeks. When roots are coming out of the bottom of the original pot, pot on singly.
You will either end up with one or a dozen plants , plenty to give away.
A non-flowering shoot is what you need to choose.