Unfortunately you will not be able to save much by any means.
If you are a bachelor, you can rent a room in a shared accomodation for around 2000 to 2500 QR/month.

You can pay more less for a lower quality rooms or sharing the same room with someone else.

If you are going to get your family here, then forget about covering your monthly expences with such salary.

Full accomodation rent can be around 5000 QR for a very ordinary small sized appartment of 2 bedrooms.

Bearing in mind that prices are gradually rasining up with the upcoming world cup football event in 2022.

If you haven't signed the contract, think seriously before you do so.

Good luck.