Hello Sir,
Good Morning.
Yes I can boost your website upto 90% in desktop and upto 80% in mobile device.
I write minimum score may we can get more then this :)
Please share me your website link admin login and FTP login, I will boost your website page speed in 2-3 hours.
I have done many jobs for page speed optimization and get well score and better feedback from clients.
I am waiting for your positive response.
Thanks In Advance
mnwebsolutions