Set up cellular is not highlighted as it is usa model while i am in qatar

Hello,

The Apple Watch still comes in regional models which is likely the cause of this issue. I do not think you have any options besides replacing it with a regionally specific model.

Set up cellular on Apple Watch - Apple Support

"Make sure that you have an eligible cellular service plan with a supported carrier. Your iPhone and Apple Watch must use the same carrier,* and you must be within your carrier's network when you set up cellular on your watch."

"To cover the LTE and UMTS bands used around the world, cellular models of Apple Watch come in regional models for the Americas, China mainland, and Europe/Asia Pacific. Unlike iPhone, there isn't a worldwide Apple Watch model that supports all cellular bands used globally."

Apple Watch - Carriers - Apple

"Apple Watch Series 8

• Model A2773 (41mm)
• Model A2775 (45mm)

Apple Watch SE

• Model A2725 (40mm)
• Model A2724 (44mm)

Apple Watch Ultra

• Model A2684

LTE

• 1 (2100 MHz)
• 2 (1900 MHz)
• 3 (1800 MHz)
• 4 (AWS)
• 5 (850 MHz)
• 6 (850MHz)
• 7 (2600 MHz)
• 8 (900 MHz)
• 18 (800 MHz)
• 19 (800 MHz)
• 20 (800 DD)
• 25 (1900 MHz)
• 26 (800 MHz)
• 28 (700 APT MHz)
• 39 (TD 1900)
• 40 (TD 2300)
• 41 (TD 2500)
• 66 (AWS-3)

UMTS

• 2100 MHz
• 1900 MHz
• 1700/2100 MHz
• 850 MHz
• 900 MHz

Qatar

• Ooredoo
• Vodafone"

I hope this helps.