Unable to install CUDA toolkit on Linux WSL-Ubuntu 2.0 x86_64

While using sudo sh cuda_11.1.0_455.23.05_linux.run I am getting below error:

nvidia-installer log file ‘/var/log/nvidia-installer.log’
creation time: Mon Oct 5 22:29:22 2020
installer version: 455.23.05

PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin

nvidia-installer command line:
./nvidia-installer
–ui=none
–no-questions
–accept-license
–disable-nouveau
–no-cc-version-check
–install-libglvnd

Using built-in stream user interface
-> Detected 12 CPUs online; setting concurrency level to 12.
WARNING: You do not appear to have an NVIDIA GPU supported by the 455.23.05 NVIDIA Linux graphics driver installed in this system. For further details, please see the appendix SUPPORTED NVIDIA GRAPHICS CHIPS in the README available on the Linux driver download page at www.nvidia.com.
-> Installing NVIDIA driver version 455.23.05.
WARNING: One or more modprobe configuration files to disable Nouveau are already present at: /etc/modprobe.d/nvidia-installer-disable-nouveau.conf. Please be sure you have rebooted your system since these files were written. If you have rebooted, then Nouveau may be enabled for other reasons, such as being included in the system initial ramdisk or in your X configuration file. Please consult the NVIDIA driver README and your Linux distribution’s documentation for details on how to correctly disable the Nouveau kernel driver.
-> For some distributions, Nouveau can be disabled by adding a file in the modprobe configuration directory. Would you like nvidia-installer to attempt to create this modprobe file for you? (Answer: Yes)
-> One or more modprobe configuration files to disable Nouveau have been written. For some distributions, this may be sufficient to disable Nouveau; other distributions may require modification of the initial ramdisk. Please reboot your system and attempt NVIDIA driver installation again. Note if you later wish to reenable Nouveau, you will need to delete these files: /etc/modprobe.d/nvidia-installer-disable-nouveau.conf
-> Performing CC sanity check with CC="/usr/bin/cc".
-> Performing CC check.
ERROR: Unable to find the kernel source tree for the currently running kernel. Please make sure you have installed the kernel source files for your kernel and that they are properly configured; on Red Hat Linux systems, for example, be sure you have the ‘kernel-source’ or ‘kernel-devel’ RPM installed. If you know the correct kernel source files are installed, you may specify the kernel source path with the ‘–kernel-source-path’ command line option.
ERROR: Installation has failed. Please see the file ‘/var/log/nvidia-installer.log’ for details. You may find suggestions on fixing installation problems in the README available on the Linux driver download page at www.nvidia.com.

I am unable to understand the issue. Please help to solve this issue.
I am using:
WSL2
Ubuntu 18.04.5 LTS
Linux version 4.19.128-microsoft-standard (oe-user@oe-host) (gcc version 8.2.0 (GCC))