get up to (something)
1. To physically reach a particular height or point. Wait, the elevator's broken? How are we supposed to get up to the 26th floor?
2. To reach a particular point in something (as opposed to completing it or experiencing it in its entirety). I only got up to chapter 10, so don't spoil anything for me!
get up to something
1. Lit. to climb up to something, at a certain height or level. We finally got up to the top. How long will it take to get up to the tenth floor?
2. Fig. to arrive as far as something. We got up to the halfway point and stopped. Will I ever get up to the finish line? I'm so tired of running!