Alejandra, I'm in the US and my grandchildren both have iPhone X's, so I've done several screen replacements. Lately I've been paying about $35 USD for a soft OLED replacement screen, which on the last one included the precut adhesive sheet, tools and a screen protector. Just be very careful removing the earpiece speaker assembly from the old screen, but otherwise it's not too bad of a repair as phone fixes go. Here's the last one I bought; no idea if it's available to you though.
New For iPhone X XR XS Max 11 12 7 8 LCD OLED Display Touch Screen Replacement
(Well don't that just frost your cookies - I see they dropped the price by quite a bit since I bought mine!)
And just for reference should you need it, here's the guide to do the job.
iPhone X Screen Replacement - iFixit Repair Guide
That kit is great in that it has everything you need to replace the screen with the exception of a suction cup and a heat source. A hair dryer will work fine to heat the screen adhesive, but you're on your own for finding a suction cup, lol.