I don't know how to remove, this is some image hosting website.
I only received what can be seen in the photo.
Well, if you had the number, you could download a piece of software called "electrum", when you would open the software, you'd be greeted with a wizard. You'd have to follow the wizard to restore your wallet. In the wizard, there would be a point where you'd have to enter your seed phrase. The seed phrase is the phrase shown in the picture you posted. There would be an 'options' button on the same screen where you'd have to enter the seed phrase, if you'd click this button you could indicate that it was a bip39 seed with an extension word. The extension word would probably be the 6 numbers the note you posted is talking about. When you'd enter these 6 numbers, you'd be able to spend the 0.1 btc (>$6000 at current rate).
Now, without those 6 numbers, you cannot spend the funds... But since you've posted the seed phrase, anybody with enough time on their hands could write a brute force program to test the ~1 million combinations the 6 numbers could form. After writing the program, it would probably take less than an hour to test them all and steal your money.
I'd still urge you to try to get that image off that image hosting site you posted it on, then try to find those 6 numbers yourself and if you succeed, move that money to any other bitcoin wallet (you can use electrum to generate a NEW wallet using the same wizard, but chosing to create a new wallet instead of restoring an existing one), since you basically showed the whole world the seed phrase and it won't take to long before somebody tries to steal the money.
Now before you ask, i'm not going to write a program and try to bruteforce the extension word... Odds are to big you're just trolling, and if not odds are really big somebody will beat me to the punch, so it's not worth investing my time into this. If you are able to get the image removed, it might be a good idear to see if you find somebody that's willing to help you out in exchange for part of the money (but it will be hard to convince them you're for real). By the way, before you ever pay somebody for this task, do realise odds are somebody is pranking you, or somebody already beat you to the punch and the wallet in question is already empty.