Thanks for asking here! For your question, if you installed your Antivirus Security successfully, you can remove the installer files to recycle bin directly. If you haven't installed Trend Micro Security yet, we suggest you to un-install and re-install Trend Micro Security. Here's a reference doc for the steps: Reinstalling the latest version of Trend Micro Security program
Please let us know if your question is answered. After the above steps, if you're still having problems, please provide a description or picture of your issue, we'll be glad to assist you. Thanks.