Ubuntu - run bash script on startup with visible terminal

I am wanting to run a bash script on startup in Ubuntu 20.04 with the terminal visible. The test.sh file is located at /usr/bin/test.sh. I can get the test.sh file to run at startup but not in a visible terminal window.

Contents of test.sh:

#! /bin/bash
echo "hello";

I can not get it to work, I have tried (individually):

Crontab (with and without the '&' and with/without "sudo")

@reboot bash test.sh &

@reboot /usr/bin/test.sh &

@reboot DISPLAY=:0 xterm -hold -e bash -c "bash test.sh" &

@reboot DISPLAY=:0 xterm -hold -e bash -c "bash /usr/bin/test.sh" &

Startup Applications Command

sudo bash /usr/bin/test.sh
bash /usr/bin/test.sh
/usr/bin/test.sh

Creating a Service at /etc/systemd/system/testService.service

[Unit]
Description = Test Service

[Service]
WorkingDirectory= /usr/bin
ExecStart= /usr/bin/test.sh

[Install]
WantedBy=multi-user.target

And start, enable and checked status..

systemctl start testService.service
systemctl enable testService.service
systemctl status testService.service

But failed to start.

Any help / pointing in a better direction would be appreciated!

To get a GUI terminal window to appear when you run your script:

Add to "Startup Applications" (under command):

bash test.sh

Contents of test.sh:

#! /bin/bash
    DISPLAY=:0.0 xterm -hold -e bash helloWorld.sh

Contents of helloWorld.sh:

#! /bin/bash
echo "hello";

For me, this opened an XTerm terminal window upon login and ran the helloWorld.sh script.