Apparently I made a Gmail video call to an unknown profile on Wednesday 11th,
but I'm sure I never started it. Is this a virus?
How do you explain that, you made a video call but you didn't start?
Based on your screenshot, you made an outgoing call.
What happens when you click Block this caller?
See the following Apple articles:
Block phone numbers, contacts, and emails on your iPhone, iPad, or iPod touch
Block phone numbers, contacts, and emails on your iPhone, iPad, or iPod touch - Apple Support
Recognize and avoid phishing messages, phony support calls, and other scams
Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support
Phony "tech support" / "ransomware" popups and web pages
Phony "tech support" / "ransomware" popup… - Apple Community