"Non, je ne suis pas," means "No, I am not." in English.
The phrase 'Escroquerie yes, ne pas effectuer' is a mix of four French words and one English. The word 'yes' finds its French equivalent in 'oui'. The corrected phrase, 'Escroquerie oui, ne pas effectuer' means Fraud[ulent]: yes, [so] don't carry [it] out [or don't get involved]. In the word-by-word translation, the noun 'escroquerie' means 'fraud, swindle'. The adverb 'ne...pas' means 'not'. The verb 'effectuer' means 'to carry out, conduct, make, serve'.
"Je ne comprends pas" means "I do not understand" in English.
Ne reviens pas means "don't come back".
"(ne) sommes-nous pas" means "aren't we ..." in English. This is a question form from "nous ne sommes pas ..." (we are not ...)
" ... n'est pas heureuse " means "... isn't happy" in English. "ne pas heureuse" means "not happy", but is a fragment.
L'école ne me déplait pas means School / the school does not displease me.
'I am not able'
je ne conprent pas
I do not love you - (it should be written 'je ne vous adore pas')
It means never mind
It means that 'I do not like you.'