There is no any sense in waiting help from outside.

That is why there is no any sense (in) waiting help from outside.

That is exactly/precisely why waiting for outside help is senseless.

+++Andrey ... THAT'S a translation!

Zoya, That’s why there’s no sense waiting for outside help

спасибо за помощь, Улий.

✌

Elena, there's a problem with your translation. If you'll post it in the comments for discussion, I'll point it out.

Andrey post it!

Sir, yes sir!

😉

very good! SENSELESS or POINTLESS

Елена, запятая там не нужна

Thank you!

Не нужна и к тому же в английском не правильна.

Four excellent translations!)))

And Elena, your translation would also sound good in this context with ABSOLUTELY no sense 😉

👍