If it’s the synthetic stock it’s solid plastic with the soft touch coating.
Trust me when I say no wood screws, as they will wallow out in short order and you’ll be left with two holes too big for the original screws you used. Wood screws and plastic don’t mix, anyway.
Get the T- nuts with the teeth on them, countersink those inside the stock, and set them in a bed of JB weld. In the end you’ll be glad you took this route. There’s YT videos on this procedure. For the countersink I used a 3/4” wood paddle bit.
On the pic rail you’ll need to style wiyh the radius’d back side so the fit up is tight onto the wildcats radius’d forearm. If you need links to the t- nuts and pic rail let me know. Ive installed these many times in both the synthetic and laminate wildcat stocks