I wouldn't steal them

A: Now, if someone tries to steal my jewelry, the burglar alarm will go off.
B: Do you really think that if you didn't lock up your valuables,
that someone would try to steel them?
A: I'm afraid so.
B: I wouldn't steal them.
A: No, you wouldn't because you're honest.

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I wouldn't steal them. ?

Which tense is this sentence:

1- present tense

2- future tense

3- ...

Thank you