Charizard value?

Came across my siblings and my Pokémon collection at my parents house. Tons of cards in sleeves and in good condition. Am I looking for anything specific for value? We do have a holographic charizard card. Is this worth anything? Picture attached.

Thanks so much

You can check recently sold listings on eBay for a general idea of what the card's been going for (just make sure you're not looking at a 1st edition, shadowless, graded card, etc. if yours isn't and that the condition is similar to yours). In the case of Base Set Unlimited Charizard, it looks like it's currently in the $200-ish range.

Get it graded. How does the back look? If the back is good, meaning was the card played with or just collected? Once you get it graded it's value will rise and you'll no what it's worth. Get it graded with Psa.