There are no immigration forms to fill out in AMS. The walk may actually be quite long, as CX usually arrives at the G-pier (not F); at least, I've always seen the CX 744 parked at the G-pier close to SQ, MH and UA/CO. The CPH flight will likely depart from the C or B-piers (sometimes also the higher D gates, higher in number as well as one level up), and that walk may take a while, and you'll have to pass through immigration and security to access the Schengen area. I've seen some long lines at immigration recently, but since I use the biometric Privium system I can't judge how long the wait is. If you're flying in J or F there are now dedicated fast-track immigration lines at well when you come from landside, but I'm not sure about the airside immigration.

The airport is well signposted so you shouldn't have any problem finding your way around. If the CX flight is on time you won't have to worry about your connection at all.