Hi I am new to Briskoda and this may sound like a stupid question,I have a Bolero radio in 2015 Fabia I also have a Garmin nuvi 57lm sat nav,is there any way I can get the sat nav picture on my Bolero  thank you

No.

However if the Bolero has smartlink you can connect a mobile with Apple play or Android auto by USB cable and see the sat nav from the mobile on the Bolero screen.

Another option is £599 sat nav retrofit at a Skoda dealer. A Kenwood unit with Garmin maps.

The kenwood units are pretty good when they work.