I’ve sent my family sharing invite to my wife she received the invite on her email she deleted get started but nothing happened. It’s showing on my end as invitation sent

Can you resend the invitation? From the article below.

See if your family member accepted the invitation

After you send the invitation, you can check its status under the person's name.

On your iPhone, iPad, or iPod touch

Go to Settings > [your name] > Family Sharing.

Then select that person's name to see the status of the invitation. If you need to resend the invitation, select Resend Invitation.

On your Mac

Choose Apple menu  > System Preferences, then click Family Sharing. If you're using macOS Mojave or earlier, choose Apple menu  > System Preferences > iCloud, then click Manage Family.

Then select that person's name to see the status of the invitation. If you need to resend the invitation, select Resend Invitation.

Set up Family Sharing - Apple Support