If I installed the virus protection on my iPhone last week, can I delete the app and still have the ability to install on a computer instead of my phone?
Hello @Annamarie and welcome to the Community!
Yes you can, simply follow the insightful steps described by Gjoksi above.
Since you are using a Total Security license for up to 5 devices, you can protect the main operating systems, Windows, MacOS, Android and iOS, so basically if you remove a mobile device to free up a slot, you can use that slot to protect your PC 😊
Regards