which one is correct?

English as a Second Language English Vocabulary, Grammar and Idioms
1

Are all the following sentences correct?

1.How will be this sentence in the indirect speech.
2.How will this sentence be in the indirect speech.
3.How will this sentence in the indirect speech be.

2

IMHO:

(1) How do you say this sentence in indirect/reported speech?

(2) How would this sentence be said in indirect speech?

(3) How is this sentence said/expressed in indirect speech?

3

They aren’t correct.

I suggest:
How will this sentence be written/said/voiced/expressed using indirect speech?