Bdtyktl

I face this issue when updating my VS Code. I have posted what I obtain in my terminal after running sudo apt-get update and sudo apt-get install code below:

[10:04:28] dyufenyuy@Synepsys-Yufenyuy:~$ sudo apt-get update

[sudo] password for dyufenyuy: 

Reading package lists... Done

E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)

E: Unable to lock directory /var/lib/apt/lists/

W: Target Packages (main/binary-amd64/Packages) is configured multiple times in /etc/apt/sources.list.d/skype-stable.list:1 and /etc/apt/sources.list.d/skypeforlinux.list:1

W: Target Packages (main/binary-all/Packages) is configured multiple times in /etc/apt/sources.list.d/skype-stable.list:1 and /etc/apt/sources.list.d/skypeforlinux.list:1

W: Target Translations (main/i18n/Translation-en_GB) is configured multiple times in /etc/apt/sources.list.d/skype-stable.list:1 and /etc/apt/sources.list.d/skypeforlinux.list:1

W: Target Translations (main/i18n/Translation-en) is configured multiple times in /etc/apt/sources.list.d/skype-stable.list:1 and /etc/apt/sources.list.d/skypeforlinux.list:1

W: Target Translations (main/i18n/Translation-fr) is configured multiple times in /etc/apt/sources.list.d/skype-stable.list:1 and /etc/apt/sources.list.d/skypeforlinux.list:1

W: Target DEP-11 (main/dep11/Components-amd64.yml) is configured multiple times in /etc/apt/sources.list.d/skype-stable.list:1 and /etc/apt/sources.list.d/skypeforlinux.list:1

W: Target DEP-11-icons (main/dep11/icons-64x64.tar) is configured multiple times in /etc/apt/sources.list.d/skype-stable.list:1 and /etc/apt/sources.list.d/skypeforlinux.list:1

[10:04:48] dyufenyuy@Synepsys-Yufenyuy:~$ sudo apt-get install code

E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable)

E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it?

[10:04:58] dyufenyuy@Synepsys-Yufenyuy:~$ 

Please, can someone help? Thanks.