I recently found this repository on Github by android-hacker which is named virtual Xposed. The description of the repository said
A Simple App to use Xposed without root or unlock the bootloader(or modify system image etc).
VirtualXposed is a simple APP based on VirtualApp and epic that allows you to use an Xposed Module without needing to root, unlock the bootloader, or flash a custom system image. (Supports Android 5.0~8.1). The application makes all apps run inside VirtualApp and then hooks the process to Xposed using Epic. Both of the libraries are open-source and available on GitHub.You can install VirtualXposed as a standard APK. No rooting, no flashing, no hassle. This app was created by weishu a junior member of XDA.
I'VE PERSONALLY TESTED THIS PROJECT, AND BASIC XPOSED MODULES WORK PERFECTLY. -akhilkedia94
To use VirtualXposed you just need to install the apk file and import your apps and install xposed modules using the xposed framework app installed in the virtual app.