Below script tested on Kali Linux 2020.1b (Kernel 5.4.0)
sudo mkdir -p /lib/firmware/rtw88
sudo cp /lib/firmware/rtlwifi/rtl8822befw.bin /lib/firmware/rtw88/rtw8822b_fw.bin
sudo reboot
Below script tested on Kali Linux 2020.1b (Kernel 5.4.0)
sudo mkdir -p /lib/firmware/rtw88
sudo cp /lib/firmware/rtlwifi/rtl8822befw.bin /lib/firmware/rtw88/rtw8822b_fw.bin
sudo reboot