Hi,
your testbench seems correct. so possible issues are.
- library files are missing in simulation, it need to be added to vsim command.
- connections to fifo in the top level wrapper file is broken.
You can share some more details as @Vicky suggested for us to further take a look.
At same time take a look at the simple tutorial for setting up simulation with Native link setup (where all the simulation scripts are handled by quartus), hopefully you will be able to proceed.
https://www.youtube.com/watch?v=PmVVXQchv2c
Let us know if you have any questions.
Arslan