You won't be a beginner for very long, and if you just buy the cheapest you'll soon wish you had bought better. A 3-9x40 by a half decent maker, and a pair of Sportsmatch mounts will serve you well for all disciplines without breaking the bank.
Don't skimp on the mounts and don't be lured by high magnification, 30mm tubes or 50mm objectives, you just don't need them. Not yet, anyway

https://uk.hawkeoptics.com/vantage-3...o-mil-dot.html

https://www.sportsmanguncentre.co.uk...0-scope-mildot

https://www.sportsmanguncentre.co.uk...0-half-mil-dot