I got a messege "Your MacOS... is infected with 3 viruses!"

dear all's

I got this message from a website what should I do ?

this is the message :

Your MacOS 10.14 Mojave 

is infected with 3 viruses!

Tuesday October 22, 2019 8:04 PM

Your Mac is infected with 3 viruses. Our security check found traces of 2 malware and 1 phishing/spyware. System damage: 28.1% - Immediate removal required!

The immediate removal of the viruses is required to prevent further system damage, loss of Apps, Photos or other files. Traces of 1 phishing/spyware were found on your Mac with OSX.

To avoid more damage click on 'Scan Now' immediately. Our deep scan will provide help immediately! 

1 minute and 27 seconds remaining before damage is permanent.

[Edited by Moderator]