how to remove identity guard icon from right top corner of computer
There is no option to delete it when I tap on it. The Identity Guard front page loads each time I turn on computer. I do not have an active account now.
1080p,
I suggest that you start by contacting Identity Guard support for the removal instructions.
If they can't or won't help you, there may be some other options available to you that we can try to assist you with. The option would be to run an EtreCheck report so that we can get an idea on where this app "hid" itself on your Mac. EtreCheck is a diagnostics tool, developed by a valued forum member, that greatly aides in troubleshooting difficult issues with Macs. You can optionally post its report here if you need assistance with interpreting its results.
Ref: Using EtreCheck to Troubleshoot Potential… - Apple Community
In addition, you may find this forum post user tip helpful even if its topic is not exactly the same as yours. It does go through the details on where to look for these hidden files.