This document appears to be informing the recipient that they have won £500,000 in a Google/Gmail lottery. However, it contains many signs that it is a scam, including poor grammar, a request for personal details and bank information to be sent to a suspicious email address, as well as implausible claims about how the winner was selected without entering. The recipient is urged to contact the "claims department" right away or they will be disqualified from the prize.