Is Nabr is a salt

First of all to correct you chemical formula, it is ' NaBr', which is sodium bromide;.

Yes it is a SALT.

Remember 'bromine' is a member of the halogen Group. The Word, Halogen' means 'Salt Maker/Generator' from Latin.

As a general rule ant metal cation , ionically combined with an acidic anion is a 'Salt'.