This is my grandpa's coin collection and I wonder if anything is rare?

I can send more images, these are just the front side of then

Time to start adding to your collection here on Numista!

https://en.numista.com/catalogue/index.php

Familiarize yourself with the search features as they are very intuitive.  Coin listings will offer information like mintages and values based on condition so you can see what might be rare and what's common.

Have fun!

To get you started, here's an example from the first coin in your first image.

Opening the filters for the coin, I see that it's face value is 10, the year is 1999 and that looks like Cyrillic script on it.

Hitting search gets me to the coin!

Finally, scrolling down on the coin listing I see this info.

As an example pick a coin such as this one

Using the search put in what you can see on the coin. In this case without seeing the other side I see a 2 and 1980.

The search

Of the 67 results it's easy to find the one that looks like this coin.  N#2085

On the coin page for 1980 you see values of US $0.12 to $0.68 depending on grade.