Gst On construction work for local body

I had done some construction work for local authority, they had deducted tds for FY 21 22 in GST but i haven't shown the same in my gst return in that period as I don't know about the TDS under gst.

Now my question is can i file gst return for that period and show that sale in my CY turnover,

what would be the gst rate on this service ?

Please help!!