Hi Alaa -- Nice coin. I think it would sell to a collector for about $40 US dollars. A coin dealer might offer $20 for it. The one in my picture sold for $39 US dollars. Here is the description of the one in my picture:

Inasta Auction> Auction 92 Auction date: 22 February 2021
Lot number: 209

Price realized: 32 EUR (Approx. 39 USD / 28 GBP / 35 CHF)
Lot description:
IMPERIAL ROMANS - Salonina (wife of Gallienus) - Antoniniano - Diademed bust to d. on crescent / R Gallienus and Salonina when confronted join hands C. 31 (AG g. 3,86)

Estimate: 20 EUR