Registers ss, cs, ds, es, gs, fs are special. They are called segment registers and contain not addresses but selectors.
A selector is used by the CPU as a reference to a segment - area of memory with a specific base (start address), limit (end address) and permissions.
Selectors and segments are set up by the OS and in theory there may be many different ...
You can either press Ctrl+G and type LoadLibraryA to land at this function address, or if you want to list all the functions from kernel32.dll you can go to the Symbols tab like this:
From there you can view the function address or just double-click "LoadLibraryA" to follow it in disassembler.