Why not search in the bounty section? Many of new ICOs list such things under bounty, although you are not paid in the btc/eth or some other coins you will be paid in the particular token/coin of an ICO depending on your stakes. Some of the ask for your account to have subscribers some are paid deepening on how many people watch your video at end etc.
I don't think you will get much offers by simply offering your service here and saying you don't have much experience this is why I will advise you to check bounty section.
Unfortunately for me every worthy ICO in the altcoin boutries section have minimum requariments for the amount of youtube subscribers at the channel (but I'm still monitoring this section). The ones that don't have such requirements are either a bit shady and not attractive for investors or the initial idea of the project is unclear for me. Sometimes the ICO's initial idea is bad and in the other cases they are so specific that it is hard to dig deeper and understant their purposes. In both cases I won't be able to make a good overview so I'm just trying my luck here. I don't think you will get much offers by simply offering your service here and saying you don't have much experience this is why I will advise you to check bounty section.
The depth of my review will be measured by the length of the video and the field of your project.