I have installed Ansible day 8 on Jump server with command pip3 install --user ansible==4.8.0

It shows the version also 4.8.0 when I use command pip3 show ansible
but the lab is not taking the answer

Note that the task says:

Make sure Ansible binary is available globally on this system, i.e all users on this system are able to run Ansible commands.

so you need to use sudo with pip3.