Legally yeah but if you are in a country outside the US then paramount+ is not available to you. Even with ExpressVPN you won’t be able to access paramount+. I managed to find episodes illegally on a website called solarmovies.
There is this app named "tea tv" For android where you can watch whatever you want, it works pretty well, here is the link, it is like a pirate netflix u know. https://teatv.net/ Edit: app is totally free, no trial or other stuff
An Australian website 'Stan' has all episodes of iCarly. however, you can't use it outside of Australia. https://www.stan.com.au/ (30-day free trial) https://unlocator.com/channel/stan/ (This lets you watch stan outside of AUS)
It's on the Season 2 Volume 3 DVD - here . I'm sorry if this is inconvenient, but it's the best I can think of unless if it's on Paramount+