Kali linux .Need help please im a beginner

I just start using kali linux for 3 days ago. Im very fresh into computing programing and lamnguages and codes but really wsant to learn and now that i are home and dont have nothing to do is the greatest opurtunity to learn and i really im very iuntersted.
I install kali linux on the oracle virtualbox and watch a tutorial on youtube for beginners in ethical hacking.
After a while it comes to how to install a program on kali linux on the terminal.
i open the terminal and type as the teacher sad.
com: apt-get install terminator.
And i got this message:
└─$ apt-get install terminator
E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

└─$ 100 ⨯
Could anyone please help me and tell me what i have to do or should i use another program.
I would be very gratefful for the help and woundt mind to make a donation for the help.
Hope to get answears.
Best regards

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