Is it work repairing is it a throw away job???
I would not pay someone to repair a cheap Tasco, unless it had sentimental value, or was a rare collectors piece. Here are some popular scope repair places that guys on RFC have used in the past:
Ironsight
Parsons
ABO
These places usually want $50 as a minimum and it goes up from there.
How old is this Tasco?
Bushnell owns Tasco and will repair those Tascos purchased under their watch.
Tasco warranty is described here.
Tasco said:
If you have a Tasco product that requires service or repair,
1. First determine if your product was manufactured before or after 9/1/02. Tasco products manufactured before this date did not have a code for the year of manufacture. Tasco products manufactured after 9/1/02 will have this code (See Diagram 1 for help with determining this).
The Tasco brand was purchased by the current owners in August of 2002. Only product manufactured after this date is entitled to complete warranty coverage.
In general do it yourself repair is difficult at best.
Many modern scopes ocular eyepieces ARE VERY HARD to remove as they have a special lock to prevent them from accidentally being screwed out. So the first step is to remove the ocular. Next you need to remove the reticle, which is attached to a field stop ring. This ocular field stop ring may be held into place with three screws, or it may be screwed into place, or held in place via some sleeve spacers. To replace the reticle means breaking the scope's moisture seals, not that they aren't already broken. So you need to consider how to reseal with Nitrogen if you don't want fogging. I have heard of some thrifty people placing scope in oven at low heat setting hoping to "dry out" the air. Others will use a plastic bag as a poormans vacuum chamber, Nitrogen tank, some hose, and a vacuum pump.
The next problem is finding a source for a replacement reticle. For an old scope that is not an Leupold or old Weaver, this can at times be difficult. Scope repair place WILL stock and cannibalize reticles, so you might check them. Some folks will remove old reticles, tear out crosshairs, and replace with either fine wire or spider web. Again, good luck on this. I did something like this with a broken reticle on a telescope finder and it requires a lot of patience to get the spider web to lay down flat, straight, and centered! Most thin wire tends to be a bit thick.
Here is an interesting link with tips on spider web replacement. Shellac to hold hairs in place and magnifying glass to select best webs strings. You might want to search web with a "repairing crosshairs with spider web" search string.
T.K Lees sells custom reticles, so you might consider checking with him. IMO a Tasco is not worth putting a TK Lee reticle into. If your scope is not listed, then you must check to see if reticle is attached by screws (usually three screws). Obviously this will cost and prices start at $75 on up.