Text at the endo of a level

How can I insert with Doombuilder a text at the end of a level?

With Doom Builder, you cannot insert a text at the end of a level.
If you are making a Zdoom map, then you can create a MAPINFO lump with SlumpEd or XWE, but if you're using the old Vanilla Doom configurations, you can't insert a text at a level's end...

And how can I insert it with XWE?

Please be more specific. Do you want to have a text displayed on your screen while reaching the end of your level (in ZDoom)? Do you want a text screen such as in Vanilla DooM before MAP07? Do you want to have an ENDOOM screen (the ASCII text you get when you close Vanilla DooM)? Or do you want to have a texture near your level's exit switch with text on it?

As before MAP07

MAPINFO lump...
You can create it directly from XWE

When you open your wad with XWE, click on the ENTRY tab, then NEW, then
in the field ENTER ENTRY NAME, type MAPINFO.
It should create a file named MAPINFO, that you can edit as a text...

Where ecxactly I have to create the lump?

Possibly at the end of all the lumps...

To create it there, click on the last lump, then do what i've told you

And doing this, at the end of what map the text appear?

Well, it seems you don't know much about MAPINFO lump...

I suggest you to take a look at this

Thank you very much. With this I think that I don't need this threath... Thak you