Certainly nowhere near 9000, but I know how to cook a lot of things.
But also I'm a bit confused by how you define different meals here? Like you say you can prepare meat, potatoes, eggs, and salad, but what does that mean?
Like for meat there's a big difference between pan-frying, deep-frying, slow-roasting, roasting, barbecuing, grilling, sautéing, sous-videing, etc. There's a big difference in different types of meat and different cuts in terms of spice profiles, preparation methods, cook times, etc. And then there's sauces: are you making a reduction sauce? Which liquid are you using for the reduction? Are you making a gravy? How are you preparing the gravy? Are you doing a marinade? What flavors and spices are you choosing for the marinade? Are you making a chutney or a chimichurri? A rub? etc. etc. Like all of those would be questions that I would define as very different dishes, and it's like 90% of the fun of cooking. For instance, on the one hand, you could say bulgogi and say, al pastor are the same: you make a marinade, you let the protein sit in the marinade for some amount of time, after which you pan fry or grill the protein to the desired temperature or consistency. But there are so many nuances to how you prepare the marinade, how you tweak it, what ingredients to choose, how you treat the protein, what you pair it with, etc., that I wouldn't feel at all comfortable to say "if I know how to make a mean al pastor, that means I also know how to prepare bulgogi."
And then eggs...I mean the ingredient is so versatile in the ways you can approach and iterate off its preparation that it's a notorious test/demonstration of culinary prowess.
At the end of the day a lot of the techniques in cooking are pretty straightforward. You prepare a protein, you make a sauce to highlight the part of the protein you want to highlight, you make some side dishes to complement the protein, and that describes like a very large chunk of western cuisine. And yet there are still hundreds to thousands of very very good restaurants specializing in western cuisine innovating on that basic framework and bringing something fresh to the table.