Depends on how you level it.. If you level by blocking up the tires, then yes, if the shocks are working properly it will settle a bit after you park.
IF, on the other hand you are leveling using leveling jacks, Then it MIGHT settle into the ground a bit, but it will nto settle if parked on concrete unless the jacks leak. or are in serious need of an air purge.
Extend the jacks as far as you can.. Yes, I know you should not lift the wheels off the ground but for the moment forget that, Retract,, Repeat, Repeat. (This is for hydraulic jacks). Electric jacks do not have this problem.
Home is where I park it!