"Mil Esquemas" is Vitor Fernandes in full sweet-talk mode, and the whole song comes down to one cheeky idea: some things are better left unexplained. He opens with "Não precisa descrever o nosso sentimento" (No need to describe our feeling), and he honestly does not care whether it lasts "uma vida inteira ou só um momento" (a whole lifetime or just a moment). When he is with her, "o mundo para" (the world stops), and her smile alone calms him down.
The best line is the hook: "E o nosso beijo dispensa legenda" (And our kiss needs no subtitles). Dispensar means to do without something, so the kiss speaks for itself, no translation required, which is a fun thing to read in a language app. Then comes the brag: "Eu sou doido por essa morena" (I'm crazy about this brunette). Morena is a woman with dark hair or tanned skin, and in Brazilian songs it is also a warm way to say "my girl". Esquema is slang for a fling or a side option, so "Não troco ela nem por mil esquema" (I wouldn't trade her for a thousand flings) means no casual offer comes close. Notice the grammar shortcut too: standard Portuguese would say "mil esquemas" and "não a troco", but sung, everyday Brazilian keeps it loose.
The closer, "Olha o piseiro apaixonado" (Here comes the lovesick piseiro), is his tag. Piseiro is the danceable, keyboard-driven style of forró from Brazil's Northeast that he sings, and "apaixonado" (in love) is exactly the mood here.